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The American Paradox: A Structural Analysis of Poverty, Inequality, and Homelessness in the World's Richest Nation

Executive Summary

The United States presents a profound paradox: it is the wealthiest nation in modern history, yet it is simultaneously afflicted by deep-seated poverty, vast and widening inequality, and a homelessness crisis of a scale unseen in other developed economies. This report provides a structural analysis of this paradox, arguing that these conditions are not accidental but are the predictable and persistent outcomes of interlocking systems rooted in the nation's history and reinforced by contemporary policy. The investigation traces a clear causal chain from the economic architecture of slavery and Jim Crow to the institutionalized segregation of federal housing policy. It then examines the post-1970s economic restructuring, marked by deindustrialization, the erosion of unions, and a stark decoupling of worker productivity from pay, which dismantled pathways to broad-based prosperity. This analysis is further compounded by an examination of specific policy levers—including a regressive tax framework and a social safety net that is notably weaker than those of its international peers—that have actively accelerated wealth concentration at the top. The report demonstrates how a uniquely American healthcare system creates medical debt on a mass scale, serving as a direct pipeline into poverty. These forces converge on the housing market, where a chronic, policy-induced shortage of affordable homes, coupled with gentrification, directly fuels the homelessness crisis. Finally, the report illuminates how these systems of disadvantage are mutually reinforcing, linking inequities in education to the school-to-prison pipeline and the devastating economic consequences of mass incarceration. The central thesis is that American poverty and inequality are not the result of individual failings but of a systemic, multi-generational failure of policy that has actively created and perpetuated disadvantage, demanding a comprehensive, structural response.

Section I: Historical Foundations of a Divided Economy

1.1 The Economic Architecture of Exclusion: From Slavery to Jim Crow

The contemporary racial wealth gap in the United States is not a recent phenomenon but a direct and quantifiable legacy of its foundational economic systems. The institution of chattel slavery was instrumental not only as a system of social oppression but as a core economic engine that simultaneously built immense wealth for white Americans while systematically preventing its accumulation by Black Americans.1 The exploitation of enslaved labor was a direct transfer of capital that enriched white individuals and the nation, with scholars estimating the loss of Black wealth from enslavement at approximately $14 trillion in today's dollars. This initial condition of a state-sanctioned wealth chasm was compounded at the moment of Emancipation by the federal government's unfulfilled promise of "40 acres and a mule," a failure that represents an additional estimated loss of $16.5 trillion in potential wealth for Black families.1 The post-Emancipation era did not usher in economic opportunity but rather a new system of economic subjugation known as Jim Crow. Practices such as sharecropping, while nominally a step up from slavery, were often structured with unfair contracts, high expenses, and perpetual debt, ensuring that most Black agricultural laborers remained trapped in long-term poverty. This system was so effective at constraining economic advancement that it was deemed the "new slavery".1 The economic trajectory of Black families today remains heavily influenced by these historical conditions. Research demonstrates a stark and persistent disparity: Black Americans whose ancestors were enslaved until the Civil War have significantly lower levels of education, income, and wealth compared to Black Americans whose ancestors were freed earlier.4 This "Free-Enslaved gap" underscores the multi-generational impact of these institutions, showing that where and when a family was freed from bondage continues to predict its economic status over 160 years later.4

1.2 Drawing the Lines of Disadvantage: Federal Housing Policy and Redlining

In the 20th century, the primary mechanism for institutionalizing segregation and wealth disparity shifted from the plantation to federal policy, specifically through housing. The creation of the Federal Housing Administration (FHA) in 1934 marked a pivotal moment. The FHA was designed to make homeownership accessible to more Americans by insuring mortgages, but its policies were explicitly discriminatory.8 The agency pioneered the practice of "redlining," creating color-coded maps of metropolitan areas to assess mortgage risk. Neighborhoods with a presence of Black or other non-white residents were systematically graded as "hazardous" and colored in red, making them ineligible for FHA-backed loans.9 This policy effectively barred Black families from accessing the single most significant tool for middle-class wealth creation in the post-war era: the government-subsidized home loan.8 The statistics are stark: between 1934 and 1962, only 2% of the $120 billion in new housing subsidized by the federal government went to non-white families.9 The FHA's underwriting manuals explicitly recommended the use of racially restrictive covenants to prevent "the occupancy of properties except by the race for which they are intended".8 The long-term consequences of this state-sponsored discrimination are profound. Redlining starved Black communities of capital investment, leading to a cycle of disinvestment and urban decay, while simultaneously fueling the growth of segregated, exclusively white suburbs.1 This historical practice is a direct cause of the persistent homeownership gap seen today, where the rate for white Americans (75.8%) is dramatically higher than for Black Americans (46.4%).11 This disparity in homeownership is a primary driver of the staggering racial wealth gap. In a state like New Jersey, for example, the median net worth for a white family is $352,000, while for a Black family it is a mere $6,100.12 The legacy of redlining continues to shape contemporary outcomes, with studies showing that formerly redlined areas still suffer from lower wealth accumulation, less investment, and a higher prevalence of adverse health outcomes today.10 The initial wealth deficit created by slavery was not left to stagnate; it was actively magnified by subsequent policy. The economic oppression of the Jim Crow regime prevented any meaningful recovery in the century following Emancipation.3 Just as the nation was embarking on the largest government-sponsored wealth-building program in its history—the creation of a suburban middle class through federally insured mortgages via the FHA and the GI Bill—it systematically excluded the very population that was already at a severe historical disadvantage.9 This created a powerful and enduring feedback loop. Exclusion from homeownership prevented the accumulation of generational wealth. In turn, the lack of wealth made it more difficult to access education, start businesses, and weather financial emergencies, ensuring that the gap did not merely persist but grew wider in absolute terms over time. This history demonstrates a clear, traceable line of state-sponsored policies that were explicitly designed to create and maintain economic disparity. The persistence of the gap is therefore not an accident or the result of individual choices, but the direct outcome of a discriminatory institutional design.1

Section II: The Great Decoupling: Economic Shifts and the American Worker

2.1 The Hollowing of the Industrial Core: Deindustrialization and Globalization

The second half of the 20th century witnessed a profound economic restructuring that reshaped the American landscape. The "Rust Belt," a region stretching across the Northeast and Midwest, became the epicenter of this transformation, undergoing massive industrial decline, population loss, and urban decay.16 This deindustrialization was driven by a confluence of powerful forces. Globalization opened up international markets, leading many U.S. companies to outsource production to countries with lower labor costs to remain competitive.18 Simultaneously, increased competition from foreign manufacturers, particularly in steel and automobiles, undercut domestic industries.17 Compounding these pressures was the advance of automation, which enabled factories to produce more with fewer workers, further reducing the demand for industrial labor.20 The human cost of this shift was immense. Cities like Detroit, Cleveland, and Pittsburgh, once thriving hubs of manufacturing, saw their economic foundations crumble. As factories closed, hundreds of thousands of well-paying jobs disappeared, leading to soaring unemployment.21 This economic collapse triggered a mass exodus of population, which in turn decimated municipal tax bases. The resulting decline in public revenue led to crumbling infrastructure, underfunded schools, and a breakdown in essential services, creating a vicious cycle of urban decay.17 This process had a disproportionately severe impact on minority workers. For decades, Black and Hispanic workers had been concentrated in manufacturing jobs due to discrimination in other sectors; when these jobs vanished, they were left with few alternatives, facing both the pains of deindustrialization and the persistence of employment discrimination.19

2.2 The Erosion of Collective Power: Deunionization and Wage Inequality

The decline of American manufacturing was inextricably linked to the decline of organized labor, a trend that has had a direct and causal impact on wage inequality. The data shows a stark correlation: between 1973 and 2007, private-sector union membership for men plummeted from 34% to just 8%, a period during which wage inequality surged by over 40%.24 The impact of unions extended far beyond their own members. The strong presence of organized labor created a "spillover" or "threat" effect, compelling nonunion employers to raise wages and improve benefits to avert the possibility of their own workforces unionizing.24 Furthermore, unions played a crucial role in establishing and upholding broader norms of pay equity and fairness in the economy, acting as a powerful voice for all workers, not just their members.24 The erosion of this collective power has had a quantifiable and devastating effect on worker pay. Economic analysis estimates that the decline of unions is responsible for a fifth to a third of the total growth in wage inequality since the 1970s, an impact on par with the much-discussed gap in pay between college-educated and non-college-educated workers.24 For the typical full-time worker, this deunionization translates into an estimated annual wage loss of $3,250.25 This decline has disproportionately harmed Black workers, who historically had higher rates of union membership than their white counterparts. The weakening of organized labor thus removed a critical institution for economic inclusion and directly exacerbated the racial wage gap, particularly for Black women.27

2.3 Productivity Versus Pay: Charting the Decades-Long Divergence

Central to understanding the modern American economy is the phenomenon of the "Great Decoupling"—the stark divergence between economic growth and the compensation of a typical worker. For decades following World War II, productivity and wages grew in tandem, ensuring that economic gains were broadly shared. However, this relationship began to break down in the 1970s. According to analysis from the Economic Policy Institute (EPI), from 1979 to 2019, net productivity in the U.S. economy grew by a remarkable 70%. In stark contrast, the real hourly compensation for a typical production or nonsupervisory worker grew by a mere 12%.28 While there are ongoing academic debates regarding the precise measurement of this gap, with some arguing that different inflation metrics or broader definitions of compensation can narrow it, the fundamental trend is undeniable.29 The EPI and other analyses have robustly demonstrated that the divergence is real, significant, and a core feature of the U.S. economy for the last four decades.30 This decoupling signifies a fundamental shift in how the rewards of economic growth are distributed. Instead of flowing to the workers who generate that growth, the gains have been increasingly captured by those at the very top of the income and wealth distribution, directly fueling the "rich-get-richer, poor-get-poorer" dynamic. The unraveling of the post-war social contract was not a series of isolated events but a single, interconnected process. The post-World War II era of shared prosperity was built on a strong manufacturing base with high union density. The advent of globalization provided capital with access to cheaper labor markets abroad, while automation offered the means to increase output with fewer domestic workers.18 This gave corporations a powerful new form of leverage; they could now credibly threaten to either relocate production or replace workers with machines. This threat fundamentally weakened the bargaining power of unions, leading to a steep decline in membership and influence.24 As the institutional force that had tied wages to productivity was dismantled, the economic gains began to flow predominantly to owners of capital rather than to labor, resulting in the great decoupling of pay from productivity.28 This process also had a distinct geographical dimension. The collapse of manufacturing was not evenly distributed but was concentrated in specific industrial hubs, creating the Rust Belt. This geographic concentration of job loss led to a downward spiral in these communities, where mass unemployment and population flight eroded the tax base, causing a collapse in funding for public services like schools and infrastructure, and cementing deep pockets of intergenerational poverty.17

Section III: The Policy Levers of Inequality

3.1 The Fiscal Framework: U.S. Tax Policy Since 1980

Federal tax policy over the past four decades has served as a principal engine of rising economic inequality.31 A defining feature of this period has been the dramatic reduction in the tax burden on the wealthiest Americans. The top marginal income tax rate, which stood at 70% in 1980, has been slashed to 37% today.31 This trend was accelerated by a series of major tax cuts under the Reagan, George W. Bush, and Trump administrations, which consistently favored high-income households.31 These reforms have disproportionately benefited the wealthy because they derive the majority of their income from capital—such as dividends, interest, and capital gains—rather than from wages. Tax cuts on corporate profits and capital gains, therefore, directly translate into higher after-tax income for this group.33 Empirical research at the state level confirms this dynamic, showing that cuts in corporate tax rates lead to a measurable increase in the share of total income captured by the top 1%.33 The long-standing argument that such tax cuts "trickle down" to benefit the broader economy through increased investment and job creation is not well supported by the evidence. Instead, studies suggest that while these cuts enrich those at the top, they do little to spur broad-based wage growth or investment.31 The cumulative effect of these policy choices has been a significant reduction in the progressivity of the U.S. tax system, weakening its ability to counteract the rise in pre-tax income inequality.32

3.2 A Frayed Safety Net: The U.S. in International Perspective

Compared to other developed nations, the U.S. social safety net is significantly less robust, providing a much weaker buffer against poverty and economic hardship. An analysis of data from the Organisation for Economic Co-operation and Development (OECD) reveals that the United States provides far less public support to families with children as a share of its economy (0.6% of GDP) than most of its peers, ranking 36th out of 37 countries.36 This underinvestment is directly correlated with outcomes; the U.S. has one of the highest child poverty rates among developed nations.36 This disparity extends across multiple domains of social protection. U.S. unemployment benefits are notably less generous and of shorter duration than those in most European countries. While American workers typically receive benefits for up to 26 weeks, many European systems provide support for one to two years, offering greater stability during periods of job loss.37 A similar gap exists in housing assistance. In countries like France and the United Kingdom, housing benefits are often treated as an entitlement, available to all who qualify. In the U.S., by contrast, federal rental assistance programs are so underfunded that they reach only about one in four eligible households.40 The overall structure of these systems also differs. European welfare states tend to be more universal and centrally administered, while the U.S. system is a complex and often inconsistent patchwork of federal, state, and local programs with varying eligibility rules and benefit levels.37

Metric United States OECD Average / European Peer Comparison Key Sources Public Social Expenditure (% of GDP, 2022) ~22% ~21% (Note: U.S. figure inflated by high private health spending) 43 Child Poverty Rate 17.8% Among the highest in the OECD 37 Public Spending on Family Benefits (% of GDP) 0.6% Significantly lower than OECD average 36 Unemployment Benefit Duration Typically 26 weeks Often 1-2 years in Europe 37 Federal Rental Assistance Coverage ~23% of eligible households An entitlement in UK/France 40

3.3 The High Cost of Being Unwell: Medical Debt and Financial Ruin

A uniquely American feature driving poverty is the nation's healthcare system. Unlike other developed nations with universal coverage, the U.S. system systematically generates medical debt on a massive scale. According to a KFF Health News investigation, over 100 million people in America—41% of all adults—are burdened by healthcare debt.45 This crisis is not confined to the uninsured. A substantial number of individuals with employer-sponsored plans, Medicare, and even Medicaid report struggling with medical bills they cannot pay.46 The consequences of this debt are devastating and far-reaching. Medical debt is a leading cause of personal bankruptcy in the United States.49 It damages credit scores, creating significant barriers to securing housing, obtaining loans, and even finding employment.50 The financial strain forces many families to make impossible choices, cutting back on essential needs like food and housing to pay medical bills.49 This creates a vicious cycle, as the fear of incurring more debt leads many people to delay or forgo necessary medical care, which can cause health conditions to worsen, leading to more complex and expensive treatments later on.46 This burden falls disproportionately on communities of color; Black and Hispanic Americans are significantly more likely to hold medical debt, making it another powerful driver of the racial wealth gap.48 The concept of universal healthcare, common in peer nations, functions as a redistributive project that could largely eliminate this pathway into poverty.52 The period since 1980 has been characterized by a dual policy movement that has powerfully accelerated inequality. On one hand, the tax code has become significantly less progressive, reducing the top-down redistribution of income from the wealthiest households.31 On the other hand, the social safety net has remained weak by international standards, failing to provide an adequate floor to protect families from the bottom up.36 This combination—less redistribution from the top and a weaker buffer at the bottom—has created a policy environment where market-driven inequality is both less counteracted by taxes and its consequences are more severe. Furthermore, the U.S. healthcare system's reliance on a for-profit, employment-based insurance model creates a structural pathway into poverty that is largely absent in other developed nations. A health crisis frequently becomes a financial crisis, a phenomenon that makes American poverty uniquely punitive and precarious.45

Section IV: The Crisis of Shelter: Housing Scarcity and Homelessness

4.1 The Scarcity Equation: Restrictive Zoning and the Affordable Housing Shortage

The housing crisis in the United States is fundamentally a problem of supply. For decades, local zoning and land-use regulations have artificially constrained the construction of new homes. Policies such as minimum lot sizes, single-family-only zoning, building height restrictions, and mandatory parking requirements make it difficult or illegal to build denser, more affordable types of housing, such as apartments and townhomes.56 This policy-induced scarcity has created a severe national housing shortage, with estimates ranging from 4 to 7 million homes.59 The deficit is most acute for the lowest-income households. The National Low Income Housing Coalition's (NLIHC) annual "Gap" report provides a stark measure of this crisis, finding that for every 100 extremely low-income renter households in the nation, there are only 36 affordable and available rental homes.61 This shortage is a direct driver of high housing costs. Research consistently shows a strong correlation between the restrictiveness of a region's zoning laws and the price of its housing, confirming that these supply constraints are a primary cause of the affordability crisis.57

4.2 The Dynamics of Displacement: Gentrification and its Consequences

Gentrification is a process of neighborhood change that occurs when a wave of new investment and higher-income residents moves into historically disinvested, low-income communities.64 This influx of capital drives up property values, rents, and property taxes, fundamentally altering the economic and cultural landscape of the neighborhood.66 This process often leads to the displacement of long-term, lower-income residents. Displacement can take several forms: direct displacement occurs when residents are forced to move due to rent hikes, evictions, or condo conversions; indirect or exclusionary displacement happens when housing becomes so expensive that other low-income families are unable to move into the neighborhood as units become vacant; and cultural displacement unfolds as the character of the community changes, with original shops, services, and cultural institutions being replaced by those catering to the new, more affluent population.64 Gentrification has a pronounced racial dimension. Because of the historical legacy of redlining and segregation, the neighborhoods most susceptible to gentrification are often predominantly Black and Hispanic. As a result, it is disproportionately residents of color who are pushed out of these revitalizing communities, unable to benefit from the new investments, improved amenities, and rising property values.65

4.3 From Housing Insecurity to the Streets: The Link Between Housing Costs and Homelessness

There is a direct and demonstrable causal link between rising housing costs and rising rates of homelessness. Research conducted by the U.S. Government Accountability Office (GAO) and numerous academic institutions has found that increases in median rent are directly associated with increases in the homeless population.69 A $100 increase in median monthly rent, for example, is associated with a 9% increase in homelessness.69 This relationship is clearly visible across the country. Metropolitan areas with the highest housing costs, such as those in California and New York, also have the highest rates of homelessness.71 Conversely, cities that have adopted more permissive housing policies and have managed to keep costs lower, such as Houston, have significantly lower rates of homelessness than their more restrictive counterparts like Los Angeles.72 The core conclusion from a large body of research is that while individual vulnerabilities like mental illness or substance abuse can make a person more susceptible to losing their housing, the overall rate of homelessness in a given community is driven primarily by the lack of affordable housing.70 The evidence overwhelmingly reframes homelessness not as a crisis of personal failing, but as a crisis of housing policy. The strong, consistent correlation between median rent and homelessness rates across different regions indicates that the primary driver of the crisis is the cost and availability of housing.69 While mental illness and addiction are highly prevalent within the homeless population, these factors do not explain why homelessness is rampant in San Francisco but relatively low in Houston. Housing costs do. This distinction is critical: the root cause of America's large homeless population is a systemic failure of the housing market, not a national epidemic of individual pathology. In this context, gentrification is not a simple process of "neighborhood improvement." In a market defined by severe housing scarcity, it becomes a powerful mechanism of displacement. Rather than alleviating poverty, it often pushes it from one neighborhood to another. Historically disinvested communities become attractive to wealthier residents precisely because of their artificially suppressed property values.64 As investment flows in and costs skyrocket, original residents are forced out, losing their homes, social networks, and access to jobs, and are compelled to move to other, often more distant and less-resourced, low-income areas.67

Section V: Interlocking Systems of Disadvantage

5.1 From the Classroom to the Cell: Educational Disparities and the School-to-Prison Pipeline

The American system of public education funding is a primary driver of intergenerational inequality. By relying heavily on local property taxes, the system inherently links school resources to neighborhood wealth.75 This creates vast and predictable funding disparities: affluent, predominantly white school districts are flush with resources, while low-income districts, which disproportionately serve students of color, are chronically underfunded.77 Nationally, school districts with the most students of color receive approximately $2,700 less per student in state and local funding than those with the fewest students of color.78 This underfunding has severe consequences for educational outcomes. Students in poorer districts contend with larger class sizes, fewer advanced placement courses, a lack of resources like libraries and technology, and a higher concentration of less-experienced teachers.79 These schools are also less likely to have adequate support staff, such as school psychologists and counselors.81 This resource-starved environment contributes directly to the "school-to-prison pipeline." Lacking the staff to provide supportive interventions, underfunded schools are more likely to adopt punitive "zero-tolerance" discipline policies and rely on on-campus police, known as School Resource Officers (SROs). This leads to dramatically higher rates of suspension, expulsion, and in-school arrests, particularly for Black and Latino students, who are pushed out of the educational system and into the juvenile and criminal justice systems for minor infractions.81

5.2 The Economic Shadow of Mass Incarceration: Collateral Consequences and Barriers to Reentry

The United States has an incarceration rate that dwarfs that of nearly every other nation, a system marked by profound racial disparity. Black Americans are incarcerated at nearly six times the rate of white Americans, and it is estimated that one in five Black men born in 2001 can expect to be imprisoned in his lifetime.84 The punishment, however, does not end upon release. A criminal conviction triggers a vast web of "collateral consequences"—thousands of federal, state, and local laws and regulations that create lifelong barriers to successful reentry.86 These restrictions systematically limit or prohibit access to fundamental components of a stable life, including employment, housing, public benefits, student loans for education, and a wide range of occupational licenses.88 The economic impact is staggering. A history of incarceration is associated with a 52% reduction in annual earnings, which can amount to a lifetime loss of nearly $500,000.90 With an estimated 87% of employers conducting background checks, formerly incarcerated individuals face immense difficulty finding work, and those who do are often relegated to low-wage jobs.86 These barriers are not only economically devastating for individuals but also trap their families and communities in a cycle of poverty, making recidivism more likely and successful reentry nearly impossible.91

5.3 The Cycle of Crisis: Poverty, Mental Illness, and Substance Abuse

There exists a complex and cyclical relationship between poverty, homelessness, and behavioral health. The homeless population experiences rates of serious mental illness and substance use disorders that are far higher than those in the general population. Epidemiological studies estimate that 25-30% of people experiencing homelessness have a serious mental illness, such as schizophrenia or bipolar disorder, and rates of substance use disorders are similarly elevated.94 This relationship is bi-directional and mutually reinforcing. Pre-existing mental illness or a substance use disorder can increase an individual's risk of becoming homeless by making it difficult to maintain employment, manage finances, and sustain relationships.97 Conversely, the experience of homelessness is itself profoundly traumatic. The constant stress, instability, and frequent exposure to violence can exacerbate existing behavioral health conditions or trigger the onset of new ones, such as depression, anxiety, and PTSD.99 The recent opioid crisis has deepened this dynamic, with homelessness being a significant risk factor for fatal overdoses.101 This cycle is perpetuated by immense systemic barriers to treatment. For individuals experiencing homelessness, accessing consistent care is incredibly difficult due to a lack of health insurance, transportation, and the sheer logistical challenge of managing appointments and medication regimens while unstably housed.103 The American systems of education, criminal justice, and healthcare do not merely fail to alleviate poverty; they actively interact to produce and sustain it. The journey often begins for a child born into a historically redlined, low-income neighborhood, who is then funneled into an underfunded school system due to its reliance on local property taxes.75 Lacking adequate resources and support, this school is more likely to rely on punitive discipline and police presence, channeling the student into the school-to-prison pipeline.81 Upon emerging from the criminal justice system as an adult with a criminal record, that individual is confronted with a web of collateral consequences that severely limit their ability to secure stable employment and housing.86 This state of economic precarity is a direct path to housing instability and homelessness. The trauma and constant stress of being unhoused, combined with a lack of access to care, then leads to or exacerbates mental illness and substance abuse, completing a vicious, closed-loop system where the output of one institution becomes the input for the next.100 This systemic analysis also reframes the public understanding of homelessness. The common narrative often misdiagnoses the issue as one of individual pathology—attributing it primarily to mental illness or addiction. The data suggests a different conclusion. While these conditions are undeniably prevalent among the homeless population, the root cause of the crisis is economic and systemic. The most effective treatment for homelessness is housing. Providing stable housing first creates the necessary foundation upon which individuals can then successfully address their behavioral health challenges, a sequence that is often inverted in public policy and debate.70

Section VI: Conclusion and Policy Pathways Forward

6.1 Synthesis: The Compounding Nature of Systemic Inequality

The analysis presented in this report demonstrates that the widespread poverty, stark inequality, and pervasive homelessness in the United States are not isolated or accidental phenomena. They are the interconnected and cumulative outcomes of a multi-layered system of disadvantage, built upon historical foundations and perpetuated by contemporary policy choices. The economic legacy of slavery and redlining created a foundational chasm in wealth and opportunity that has never been rectified. In the latter half of the 20th century, broad-based prosperity was undermined by economic shifts that devalued labor, eroded collective bargaining power, and severed the link between productivity and pay. These market-driven trends were then actively accelerated by a policy framework that reduced taxes on the wealthy, allowed the social safety net to fray, and maintained a healthcare system that generates financial ruin. The resulting housing affordability crisis, driven by policy-induced scarcity, has become the direct cause of mass homelessness. These systems are not parallel but interlocking; inequities in our educational system fuel the school-to-prison pipeline, which in turn creates a permanent economic underclass through the collateral consequences of mass incarceration. This is the American paradox: a nation of immense wealth that has engineered a durable architecture of poverty.

6.2 Policy Recommendations

Addressing challenges of this scale requires a response that is equally systemic. The following multi-pronged policy pathways are derived from the structural analysis of this report and aim at fundamental reform rather than incremental adjustments. Housing and Land Use: Aggressive Federal Investment: A massive federal commitment to the National Housing Trust Fund and other programs is needed to build and preserve millions of units of deeply affordable social housing. Zoning Reform: Federal incentives should be used to encourage states and localities to eliminate restrictive zoning laws, such as single-family-only zoning and minimum lot sizes, to allow for the construction of denser, more diverse housing types. Universal Rental Assistance: The Housing Choice Voucher program should be expanded into a federal entitlement, ensuring that all eligible low-income households receive assistance to afford rent. Labor, Wages, and the Economy: Strengthen Collective Bargaining: Pass federal legislation, such as the PRO Act, to make it easier for workers to form unions and bargain collectively, restoring a key mechanism for equitable wage growth. Raise the Wage Floor: Increase the federal minimum wage to a living wage and index it to inflation to ensure its value does not erode over time. Link Pay to Productivity: Implement policies, such as strengthening overtime protections and cracking down on wage theft, that help ensure the gains from economic growth are more broadly shared with workers. Tax and Fiscal Policy: Increase Tax Progressivity: Restore higher top marginal income tax rates and increase taxes on capital gains and dividends to ensure the wealthiest Americans pay their fair share and to fund public investments. Implement a Wealth Tax: Introduce a tax on extreme wealth to directly combat the runaway concentration of capital and generate revenue for social programs. Social Safety Net and Healthcare: Strengthen Unemployment Insurance: Modernize the unemployment insurance system by standardizing benefit levels and duration across states to create a more robust and equitable safety net. Universal Healthcare: Transition to a universal, single-payer healthcare system to eliminate medical debt as a source of poverty and bankruptcy, and to guarantee healthcare as a human right. Establish Federal Paid Leave: Create a national paid family and medical leave program to provide workers with economic security during major life events. Education and Criminal Justice Reform: End Property Tax-Based School Funding: Decouple school funding from local property wealth and move to state- and federal-level systems designed to provide equitable, needs-based funding to all districts. Dismantle the School-to-Prison Pipeline: Invest in counselors, social workers, and restorative justice practices in schools, while removing police presence to end the criminalization of student behavior. Eliminate Collateral Consequences: Pass federal and state "clean slate" laws to automatically seal and expunge criminal records, and eliminate the vast majority of legal barriers to employment, housing, and education for formerly incarcerated individuals. 참고 자료 Barriers to Racial Wealth Equality - American Bar Association, 8월 10, 2025에 액세스, http://www.americanbar.org/groups/crsj/resources/human-rights/archive/barriers-racial-wealth-equality/ The Racial Wealth Gap 1992 to 2022 - NCRC, 8월 10, 2025에 액세스, https://ncrc.org/the-racial-wealth-gap-1992-to-2022/ Jim Crow economy | EBSCO Research Starters, 8월 10, 2025에 액세스, https://www.ebsco.com/research-starters/history/jim-crow-economy Why history continues to shape racial inequality in the US - VoxDev, 8월 10, 2025에 액세스, https://voxdev.org/topic/institutions-political-economy/why-history-continues-shape-racial-inequality-us The Long Shadows Of Slavery And Jim Crow: Uncovering The Economic Impact On Black Americans - Hoover Institution, 8월 10, 2025에 액세스, https://www.hoover.org/research/long-shadows-slavery-and-jim-crow-uncovering-economic-impact-black-americans Jim Crow and Black Economic Progress After Slavery* - The Havens Wright Center for Social Justice, 8월 10, 2025에 액세스, https://havenswrightcenter.wisc.edu/wp-content/uploads/sites/846/2023/07/Althoff-Reichardt.pdf Jim Crow and Black Economic Progress after Slavery - Oxford Academic, 8월 10, 2025에 액세스, https://academic.oup.com/qje/article/139/4/2279/7718111 Redlining - Federal Reserve History, 8월 10, 2025에 액세스, https://www.federalreservehistory.org/essays/redlining A History of Racist Federal Housing Policies - Mass. Budget and Policy Center, 8월 10, 2025에 액세스, https://massbudget.org/2021/08/06/a-history-of-racist-federal-housing-policies/ 50 years after being outlawed, redlining still drives neighborhood health inequities, 8월 10, 2025에 액세스, https://publichealth.berkeley.edu/articles/spotlight/research/50-years-after-being-outlawed-redlining-still-drives-neighborhood-health-inequities Housing for Black-Led Households - National League of Cities, 8월 10, 2025에 액세스, https://www.nlc.org/article/2024/02/06/housing-for-black-led-households/ Erasing New Jersey's red lines: Reducing the racial wealth gap through homeownership and investment in communities of color - Princeton Dataspace, 8월 10, 2025에 액세스, https://dataspace.princeton.edu/handle/88435/dsp01xw42nc13n Assessing the Influence of Redlining on Intergenerational Wealth and Body Mass Index Through a Quasi-experimental Framework - PubMed, 8월 10, 2025에 액세스, https://pubmed.ncbi.nlm.nih.gov/38849692/ Modern Day Consequences of Historic Redlining: Finding a Path Forward - PMC, 8월 10, 2025에 액세스, https://pmc.ncbi.nlm.nih.gov/articles/PMC9901820/ Systematic Inequality and Economic Opportunity - Center for American Progress, 8월 10, 2025에 액세스, https://www.americanprogress.org/article/systematic-inequality-economic-opportunity/ Rust Belt - (AP US History) - Vocab, Definition, Explanations | Fiveable, 8월 10, 2025에 액세스, https://library.fiveable.me/key-terms/apush/rust-belt Rust Belt - Wikipedia, 8월 10, 2025에 액세스, https://en.wikipedia.org/wiki/Rust_Belt Automation Isn't the Biggest Threat to US Factory Jobs - Airline Hydraulics, 8월 10, 2025에 액세스, https://blog.airlinehyd.com/automation-isnt-the-biggest-threat-to-us-factory-jobs Botched policy responses to globalization have decimated manufacturing employment with often overlooked costs for Black, Brown, and other workers of color: Investing in infrastructure and rebalancing trade can create good jobs for all, 8월 10, 2025에 액세스, https://www.epi.org/publication/botched-policy-responses-to-globalization/ The Impact of Automation on Employment - Part I - NCCI, 8월 10, 2025에 액세스, https://www.ncci.com/Articles/Pages/II_Insights_QEB_Impact-Automation-Employment-Q2-2017-Part1.aspx Deindustrialization and the Rise of the Sunbelt | US History II (American Yawp), 8월 10, 2025에 액세스, https://courses.lumenlearning.com/suny-ushistory2ay/chapter/deindustrialization-and-the-rise-of-the-sunbelt-2/ Urban Decline in Rust-belt Cities - Federal Reserve Bank of Cleveland, 8월 10, 2025에 액세스, https://www.clevelandfed.org/publications/economic-commentary/2013/ec-201306-urban-decline-in-rust-belt-cities NBER WORKING PAPER SERIES THE WORLD'S RUST BELTS, 8월 10, 2025에 액세스, https://www.nber.org/system/files/working_papers/w31948/w31948.pdf Unions, Norms, and the Rise in U.S. Wage Inequality - American Sociological Association, 8월 10, 2025에 액세스, https://www.asanet.org/wp-content/uploads/savvy/images/journals/docs/pdf/asr/WesternandRosenfeld.pdf The enormous impact of eroded collective bargaining on wages - Economic Policy Institute, 8월 10, 2025에 액세스, https://www.epi.org/publication/eroded-collective-bargaining/ Union Decline and Rising U.S. Wage Inequality | Scholars Strategy Network, 8월 10, 2025에 액세스, https://scholars.org/contribution/union-decline-and-rising-us-wage-inequality Organized Labor and Racial Wage Inequality in the United States - PMC - PubMed Central, 8월 10, 2025에 액세스, https://pmc.ncbi.nlm.nih.gov/articles/PMC4300995/ Productivity vs wages: How wages in America have stagnated - The World Economic Forum, 8월 10, 2025에 액세스, https://www.weforum.org/stories/2020/11/productivity-workforce-america-united-states-wages-stagnate/ Mythbusting Is Hard: The Continuing Confusion About the Supposed Gap Between Pay and Productivity | American Enterprise Institute, 8월 10, 2025에 액세스, https://www.aei.org/economics/mythbusting-is-hard-the-continuing-confusion-about-the-supposed-gap-between-pay-and-productivity/ The Productivity–Pay Gap | Economic Policy Institute, 8월 10, 2025에 액세스, https://www.epi.org/productivity-pay-gap/ How four decades of tax cuts fueled inequality - Center for Public Integrity, 8월 10, 2025에 액세스, https://publicintegrity.org/inequality-poverty-opportunity/taxes/unequal-burden/how-four-decades-of-tax-cuts-fueled-inequality/ How do taxes affect income inequality? - Tax Policy Center, 8월 10, 2025에 액세스, https://taxpolicycenter.org/briefing-book/how-do-taxes-affect-income-inequality Do Corporate Tax Cuts Increase Income Inequality? - National Bureau of Economic Research, 8월 10, 2025에 액세스, https://www.nber.org/system/files/working_papers/w24598/w24598.pdf Do Corporate Tax Cuts Increase Income Inequality? - The University of Chicago Press: Journals, 8월 10, 2025에 액세스, https://www.journals.uchicago.edu/doi/full/10.1086/718950 The Federal Tax Code and Income Inequality - Center for American Progress, 8월 10, 2025에 액세스, https://www.americanprogress.org/article/the-federal-tax-code-and-income-inequality/ Children and the US Social Safety Net: Balancing Disincentives for Adults and Benefits for Children - PMC, 8월 10, 2025에 액세스, https://pmc.ncbi.nlm.nih.gov/articles/PMC10659762/ Pandemic shows contrasts between US, European safety nets | PBS News Weekend, 8월 10, 2025에 액세스, https://www.pbs.org/newshour/world/pandemic-shows-contrasts-between-us-european-safety-nets Comparing Unemployment Among Countries - EconPort, 8월 10, 2025에 액세스, http://www.econport.org/content/handbook/Unemployment/Comparing.html Differences In Unemployment Benefits Explain The Contrast Between European Unemployment And American Wage Inequality And Poverty - Royal Economic Society, 8월 10, 2025에 액세스, https://res.org.uk/mediabriefing/differences-in-unemployment-benefits-explain-the-contrast-between-european-unemployment-and-american-wage-inequality-and-poverty/ Lessons from Overseas Could Improve the US's Affordability Crisis | Urban Institute, 8월 10, 2025에 액세스, https://www.urban.org/urban-wire/lessons-overseas-could-improve-uss-affordability-crisis State and Local Policymakers Should Invest in Rental Assistance to Reduce Homelessness and Increase Economic Security | Center on Budget and Policy Priorities, 8월 10, 2025에 액세스, https://www.cbpp.org/research/housing/state-and-local-policymakers-should-invest-in-rental-assistance-to-reduce The US Unemployment Insurance Scheme: A Model for the EU? - Intereconomics, 8월 10, 2025에 액세스, https://www.intereconomics.eu/contents/year/2019/number/5/article/the-us-unemployment-insurance-scheme-a-model-for-the-eu.html Sizing up Welfare States: How do OECD countries compare?, 8월 10, 2025에 액세스, https://oecdstatistics.blog/2023/02/02/sizing-up-welfare-states-how-do-oecd-countries-compare/ 10. The Economics of Social Safety Nets: Here to Catch Us When We Fall? - Minnesota Libraries Publishing Project, 8월 10, 2025에 액세스, https://mlpp.pressbooks.pub/economicsforthegreatergood/chapter/the-economics-of-social-safety-nets-here-to-catch-us-when-we-fall-2/ Diagnosis: Debt - KFF Health News, 8월 10, 2025에 액세스, https://kffhealthnews.org/diagnosis-debt/ Paying for It: How Health Care Costs and Medical Debt Are Making Americans Sicker and Poorer - Commonwealth Fund, 8월 10, 2025에 액세스, https://www.commonwealthfund.org/publications/surveys/2023/oct/paying-for-it-costs-debt-americans-sicker-poorer-2023-affordability-survey Prevalence and Risk Factors for Medical Debt and Subsequent Changes in Social Determinants of Health in the US, 8월 10, 2025에 액세스, https://pmc.ncbi.nlm.nih.gov/articles/PMC9482049/ The US Medical Debt Crisis: Catastrophic Costs of Insufficient Health Coverage, 8월 10, 2025에 액세스, https://rooseveltinstitute.org/publications/medical-debt/ 2023 Medical Debt Statistics - SingleCare, 8월 10, 2025에 액세스, https://www.singlecare.com/blog/medical-debt-statistics/ Medical Debt, Money, and Mental Health, 8월 10, 2025에 액세스, https://unduemedicaldebt.org/medical-debt-money-and-mental-health/ With medical debt, good health comes at the expense of financial ruin, 8월 10, 2025에 액세스, https://www.povertylaw.org/article/rising-medical-debt-health-comes-at-expense-of-financial-ruin/ The Equity Effect of Universal Health Care - PMC - PubMed Central, 8월 10, 2025에 액세스, https://pmc.ncbi.nlm.nih.gov/articles/PMC10733771/ Inequality and Taxes, 8월 10, 2025에 액세스, https://inequality.org/facts/taxes-inequality-in-united-states/ Safety Nets: An International Comparison - New Labor Forum, 8월 10, 2025에 액세스, https://newlaborforum.cuny.edu/2019/06/05/safety-nets-an-international-comparison/ Healthcare debts in the United States: a silent fight - PMC, 8월 10, 2025에 액세스, https://pmc.ncbi.nlm.nih.gov/articles/PMC11918610/ The Impact of Zoning on Housing Affordability - Zell/Lurie Real Estate Center, 8월 10, 2025에 액세스, https://realestate.wharton.upenn.edu/working-papers/the-impact-of-zoning-on-housing-affordability/ Zoning, Land-Use Planning, and Housing Affordability | Cato Institute, 8월 10, 2025에 액세스, https://www.cato.org/policy-analysis/zoning-land-use-planning-housing-affordability How Zoning Regulations Affect Affordable Housing | NAHB, 8월 10, 2025에 액세스, https://www.nahb.org/blog/2024/11/zoning-regulation-and-affordable-housing ICYMI: National Survey Reveals Worsening Housing Crisis, 8월 10, 2025에 액세스, https://www.usmayors.org/2025/01/23/icymi-national-survey-reveals-worsening-housing-crisis/ Make it count: Measuring our housing supply shortage - Brookings Institution, 8월 10, 2025에 액세스, https://www.brookings.edu/articles/make-it-count-measuring-our-housing-supply-shortage/ The State of Affordable Housing Around the U.S. - United Way NCA, 8월 10, 2025에 액세스, https://unitedwaynca.org/blog/affordable-housing-shortages-across-america/ Report Finds Severe Shortage of Affordable Rentals - LeadingAge, 8월 10, 2025에 액세스, https://leadingage.org/report-finds-severe-shortage-of-affordable-rentals/ The Impact of Zoning on Housing Affordability - National Bureau of Economic Research, 8월 10, 2025에 액세스, https://www.nber.org/system/files/working_papers/w8835/w8835.pdf Understanding Gentrification and Displacement – The Uprooted Project, 8월 10, 2025에 액세스, https://sites.utexas.edu/gentrificationproject/understanding-gentrification-and-displacement/ Shifting neighborhoods: Gentrification and cultural displacement in American cities, 8월 10, 2025에 액세스, https://dataspace.princeton.edu/handle/88435/dsp01df65vb93t Displacement of Lower-Income Families in Urban Areas Report - HUD User, 8월 10, 2025에 액세스, https://www.huduser.gov/portal/sites/default/files/pdf/displacementreport.pdf Localized Anti-Displacement Policies - Center for American Progress, 8월 10, 2025에 액세스, https://www.americanprogress.org/article/localized-anti-displacement-policies/ Gentrification and Neighborhood Revitalization: WHAT'S THE DIFFERENCE?, 8월 10, 2025에 액세스, https://nlihc.org/resource/gentrification-and-neighborhood-revitalization-whats-difference Better HUD Oversight of Data Collection Could Improve Estimates of Homeless Population, 8월 10, 2025에 액세스, https://www.gao.gov/products/gao-20-433 How Housing Costs Drive Levels of Homelessness | The Pew Charitable Trusts, 8월 10, 2025에 액세스, https://www.pew.org/en/research-and-analysis/articles/2023/08/22/how-housing-costs-drive-levels-of-homelessness How States and Cities Decimated Americans' Lowest-Cost Housing Option, 8월 10, 2025에 액세스, https://www.pew.org/en/research-and-analysis/issue-briefs/2025/07/how-states-and-cities-decimated-americans-lowest-cost-housing-option Unpacking HUD's Homelessness Data: Building More Homes Is the Answer to Homelessness | American Enterprise Institute - AEI, 8월 10, 2025에 액세스, https://www.aei.org/articles/unpacking-huds-homelessness-data-building-more-homes-is-the-answer-to-homelessness/ HUD Releases 2024 Annual Homelessness Assessment Report, 8월 10, 2025에 액세스, https://endhomelessness.org/media/news-releases/hud-releases-2024-annual-homelessness-assessment-report/ The Cost of Living Index as a Primary Driver of Homelessness in the United States: A Cross-State Analysis, 8월 10, 2025에 액세스, https://pmc.ncbi.nlm.nih.gov/articles/PMC10574586/ The (In)Equities of U.S. School Funding | The Regulatory Review, 8월 10, 2025에 액세스, https://www.theregreview.org/2023/11/11/saturday-seminar-the-inequities-of-u-s-school-funding/ Introduction to the Property Tax–School Funding Connection - Lincoln Institute of Land Policy, 8월 10, 2025에 액세스, https://www.lincolninst.edu/centers-initiatives/efficient-equitable-tax-systems/introduction-property-taxschool-funding-connection/ Exploring the Nexus of Property Taxes, Housing Disparities and Educational Access for Black and Brown Youth in Major U.S. Cities, 8월 10, 2025에 액세스, https://www.cbcfinc.org/capstones/education/exploring-the-nexus-of-property-taxes-housing-disparities-and-educational-access-for-black-and-brown-youth-in-major-u-s-cities/ An Analysis of School Funding Equity Across the U.S. and Within Each State - The Education Trust, 8월 10, 2025에 액세스, https://edtrust.org/wp-content/uploads/2014/09/Equal-Is-Not-Good-Enough-December-2022.pdf When Schools Are Underfunded, Children Suffer | Parents for Public Schools, Inc., 8월 10, 2025에 액세스, https://parents4publicschools.org/when-schools-are-underfunded-children-suffer/ Educational Funding Inequality in Southern US High Schools - Ballard Brief - BYU, 8월 10, 2025에 액세스, https://ballardbrief.byu.edu/issue-briefs/educational-funding-inequality-in-southern-us-high-schools How the School-To-Prison Pipeline Needs Reform | The Center for Public Justice, 8월 10, 2025에 액세스, https://cpjustice.org/classroom-or-courtroom-problems-solutions-to-the-school-to-prison-pipeline/ Full article: Mass incarceration and the school-to-prison pipeline: the intergenerational transmission of criminalization - Taylor & Francis Online, 8월 10, 2025에 액세스, https://www.tandfonline.com/doi/full/10.1080/02673843.2024.2435270 The School To Prison Pipeline: What Research Says About Contribu9ng Factors and the Remedies, 8월 10, 2025에 액세스, https://cebcp.org/wp-content/uploads/2019/09/Losen.pdf Report of The Sentencing Project to the United Nations Special Rapporteur on Contemporary Forms of Racism, Racial Discrimination, 8월 10, 2025에 액세스, https://www.sentencingproject.org/wp-content/uploads/2018/04/UN-Report-on-Racial-Disparities.pdf Racial Justice - End Mass Incarceration Now - The Sentencing Project, 8월 10, 2025에 액세스, https://www.sentencingproject.org/issues/racial-justice/ Collateral Consequences of Criminal Convictions Judicial Bench Book - Office of Justice Programs, 8월 10, 2025에 액세스, https://www.ojp.gov/pdffiles1/nij/grants/251583.pdf Welcome to the NICCC | National Inventory of Collateral Consequences of Criminal Conviction, 8월 10, 2025에 액세스, https://niccc.nationalreentryresourcecenter.org/ National Inventory of Collateral Consequences of Conviction - CSG Justice Center, 8월 10, 2025에 액세스, https://csgjusticecenter.org/publications/the-national-inventory-of-collateral-consequences-of-conviction/ COLLATERAL CONSEQUENCES OF CRIMINAL CONVICTIONS: CONFRONTING ISSUES OF RACE AND DIGNITY - NYU Law Review, 8월 10, 2025에 액세스, https://nyulawreview.org/wp-content/uploads/2018/08/NYULawReview-85-2-Pinard.pdf Mass Incarceration Has Been a Driving Force of Economic Inequality, 8월 10, 2025에 액세스, https://www.brennancenter.org/our-work/analysis-opinion/mass-incarceration-has-been-driving-force-economic-inequality A Law School-Based Approach to Providing Legal Services to the Reentry Community - U.S. Courts, 8월 10, 2025에 액세스, https://www.uscourts.gov/file/22808/download Barriers to Successful Re-Entry of Formerly Incarcerated People - The Leadership Conference on Civil and Human Rights, 8월 10, 2025에 액세스, https://civilrights.org/resource/barriers-to-successful-re-entry-of-formerly-incarcerated-people/ Barriers to Successful Re-Entry, 8월 10, 2025에 액세스, https://www.unlv.edu/sites/default/files/media/document/2024-12/r6-Reentry.pdf The prevalence of mental disorders among homeless people in high-income countries: An updated systematic review and meta-regression analysis - PMC, 8월 10, 2025에 액세스, https://pmc.ncbi.nlm.nih.gov/articles/PMC8423293/ Homelessness and Mental Illness: A Challenge to Our Society, 8월 10, 2025에 액세스, https://bbrfoundation.org/blog/homelessness-and-mental-illness-challenge-our-society Homelessness, housing instability and mental health: making the connections - PMC, 8월 10, 2025에 액세스, https://pmc.ncbi.nlm.nih.gov/articles/PMC7525583/ Psychological causes and effects of homelessness | EBSCO Research Starters, 8월 10, 2025에 액세스, https://www.ebsco.com/research-starters/psychology/psychological-causes-and-effects-homelessness Homelessness in the United States - Ballard Brief, 8월 10, 2025에 액세스, https://ballardbrief.byu.edu/issue-briefs/homelessness-in-the-united-states Effects of poverty, hunger and homelessness on children and youth, 8월 10, 2025에 액세스, https://www.apa.org/topics/socioeconomic-status/poverty-hunger-homelessness-children Mental Health in Homelessness and Poverty, 8월 10, 2025에 액세스, https://fwrm.org/blog/mental-health-in-homelessness-and-poverty Opioid Abuse and Homelessness, 8월 10, 2025에 액세스, https://endhomelessness.org/resources/policy-information/opioid-abuse-and-homelessness/ Higher Rates Of Homelessness Are Associated With Increases In Mortality From Accidental Drug And Alcohol Poisonings | Health Affairs, 8월 10, 2025에 액세스, https://www.healthaffairs.org/doi/10.1377/hlthaff.2023.00951 Homelessness and Polysubstance Use: A Qualitative Study on Recovery and Treatment Access Solutions Around an Urban Library in Southern California, USA - PubMed Central, 8월 10, 2025에 액세스, https://pmc.ncbi.nlm.nih.gov/articles/PMC8590699/ Mental health and homelessness: get to know the facts - Preble Street, 8월 10, 2025에 액세스, https://www.preblestreet.org/2024/05/28/mental-health-and-homelessness-know-the-facts/ Barriers to Getting Help for Addiction - American Addiction Centers, 8월 10, 2025에 액세스, https://americanaddictioncenters.org/rehab-guide/treatment-barriers Federal Resources for Addressing Behavioral Health Needs of People Experiencing or at Risk of Homelessness, 8월 10, 2025에 액세스, https://www.usich.gov/sites/default/files/document/Federal%20Resources%20for%20Addressing%20the%20Behavioral%20Health%20Needs%20of%20People%20Experiencing%20or%20at%20Risk%20of%20Homelessness.pdf How Stable Housing Supports Recovery from Substance Use Disorders | Opioid Principles, 8월 10, 2025에 액세스, https://opioidprinciples.jhsph.edu/how-stable-housing-supports-recovery-from-substance-use-disorders/