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Evidence library
Primary documents, government statistics, research, advocacy, criticism, and journalism answer different questions. This library shows type, role, verification status, access date, and limitations.
The title, publisher, and URL have been checked. Verification does not mean the project endorses every conclusion.
Supporting, critical, contextual, historical, and methodological roles describe why an item is here.
Population, period, method, legal posture, and scope constrain the claims a source can support.
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Showing 67 of 67 sources.
Agency for Healthcare Research and Quality
A congressionally mandated federal report organizes more than 250 measures of health-care access, affordability, safety, coordination, effectiveness, healthy living, person-centered care, and disparities.
Limits: Measures draw on different data sources and years, and pandemic-era collection changes affect some series. The report is a broad monitoring resource rather than a causal evaluation of one coverage or delivery model.
National Archives and Records Administration
The National Archives presentation and transcript of the first ten amendments to the United States Constitution.
Limits: The document's text does not by itself explain modern incorporation, remedies, or the boundary between governmental and private conduct.
U.S. Bureau of Labor Statistics. U.S. Bureau of Labor Statistics
National Compensation Survey estimates of worker access to paid sick leave, plan structures, carryover provisions, and differences between private-industry and state-and-local-government employment.
Limits: Access means a benefit is available, not that every worker can afford or is able to use it. The survey excludes federal employees, agricultural workers, private-household workers, the self-employed, volunteers, and some family workers.
U.S. Bureau of Labor Statistics
The annual Current Population Survey release reports union membership and representation among wage and salary workers, including variation by sector, occupation, demographic group, and state.
Limits: The release describes association, not the causal effect of union membership on earnings or other outcomes. Because the 2025 Current Population Survey did not collect October data during a federal shutdown, annual estimates are based on 11 months and state estimates warrant particular caution.
U.S. Bureau of Labor Statistics
The Survey of Occupational Injuries and Illnesses reports employer-recorded nonfatal workplace injuries and illnesses and incidence rates for covered industries.
Limits: The survey measures employer-recorded cases and excludes some workers, including the self-employed, federal workers, and workers on farms with fewer than 11 employees. It should not be treated as a complete count of every work-related harm.
Congressional Budget Office. Congressional Budget Office
A CBO analysis of labor-market channels through which a specific proposed federal paid family and medical leave program could affect workers, employers, and states, including possible substitution for employer-provided benefits.
Limits: The analysis addresses one 2021 legislative design and explicitly does not analyze the economic effects of its financing; it is not a current cost estimate for the guarantee proposed on this site.
Jessica Hale. Congressional Budget Office
A CBO presentation of baseline projections for health-insurance coverage by source and the uninsured population through 2034 under the laws and assumptions in effect for that baseline.
Limits: Baseline projections are conditional estimates, not guaranteed outcomes or an evaluation of one reform. Later legislation, administrative changes, economic conditions, and demographic revisions can change the results.
Congressional Budget Office
CBO's budget and economic analysis of a specific 2021 bill to phase in a $15 federal minimum wage, including estimated effects on pay, employment, family income, prices, and federal programs.
Limits: The estimates apply to the bill, timetable, baseline, and modeling assumptions examined in 2021. They are not a universal estimate of every minimum-wage level or local labor market, and CBO reports substantial uncertainty.
Laryssa Mykyta, Julie D. Weeks. National Center for Health Statistics, Centers for Disease Control and Prevention
The data brief uses the 2024 National Health Interview Survey to estimate whether adults have a usual place for care and what kind of setting they identify.
Limits: The estimates are based on household interviews of the civilian noninstitutionalized population. Having a usual source of care does not by itself demonstrate timely appointments, affordability, clinical quality, or continuity with one clinician.
Lisa N. Bunch, Halelujha Ketema. U.S. Census Bureau
Report P60-288 uses the Current Population Survey Annual Social and Economic Supplement to estimate health-insurance coverage and coverage type during calendar year 2024.
Limits: The estimates are survey-based and describe whether people had coverage for some or all of the year. They do not establish whether benefits were adequate, care was affordable, or a clinician was available when needed.
Consumer Financial Protection Bureau
The CFPB's explanation that creditors using complex algorithms remain subject to Equal Credit Opportunity Act and Regulation B requirements to give applicants specific, accurate principal reasons for adverse credit actions.
Limits: The circular states an agency interpretation in a defined credit-law context. It does not create a general right to an explanation for every automated decision and should be checked against later law, guidance, and litigation.
Cybersecurity and Infrastructure Security Agency and international partners
Joint government guidance urging technology manufacturers to take responsibility for customer security outcomes, use safe defaults, disclose security information responsibly, and make product security an executive responsibility.
Limits: The document is voluntary guidance, not a statute or universal product-security standard. Its principles require sector-specific engineering, enforcement, liability, and measurement choices before they become enforceable duties.
National Archives and Records Administration
The National Archives presentation and transcript of the 1964 statute addressing discrimination in public accommodations, education, federally assisted programs, employment, and other areas.
Limits: The statute has been amended and interpreted through later law and litigation; the historical transcript is not a complete current compliance guide.
Centers for Medicare & Medicaid Services
Official national health-expenditure accounting and projections organized by payer, service category, sponsor, and other dimensions.
Limits: Aggregate expenditure accounts do not by themselves measure access, quality, affordability for particular households, or causal effects of a policy model.
Centers for Medicare & Medicaid Services
Official guidance explains federal No Surprises Act protections for many emergency services, certain out-of-network services at in-network facilities, and out-of-network air ambulance services.
Limits: The protections do not cover every plan, provider, service, or bill. Ground ambulance services are generally outside the federal balance-billing protections, and applying the rules to a particular bill can require current legal or regulatory guidance.
National Center for Education Statistics. National Center for Education Statistics
The congressionally mandated annual statistical compendium covering education from prekindergarten through postsecondary study, labor-force outcomes, and international comparisons.
Limits: The compendium is descriptive and combines measures collected on different schedules; it does not establish that a single policy caused an observed trend.
David H. Carpenter. Congressional Research Service, Library of Congress
CRS Report R48113 explains the Fair Housing Act's protected classes, covered practices, exemptions, standards for discrimination claims, accessibility provisions, and enforcement routes.
Limits: The report is a general legal overview through its publication date, not legal advice or a substitute for checking later statutes, regulations, court decisions, and state or local protections.
Congressional Research Service, Library of Congress
CRS Report R47628 surveys housing conditions and federal policy questions involving affordability, supply, rental assistance, homelessness, community development, disaster response, and housing finance.
Limits: The report summarizes issues before the 118th Congress and is not a current inventory of every later legislative or administrative change. National indicators and policy categories do not substitute for local market analysis.
Sarah A. Donovan. Congressional Research Service, via Congress.gov
A Congressional Research Service report describing federal law, employer benefits, state leave-insurance programs, research findings, international comparisons, and recent federal proposals for paid family and medical leave.
Limits: The report is a policy overview rather than an endorsement or a causal evaluation of one national design. State programs and federal proposals can change after its March 2025 update.
Chris D. Linebaugh. Congressional Research Service
A congressional legal analysis of the United States' sector-specific federal privacy laws, the growth of state privacy statutes, and the choices Congress faces when deciding whether a federal law should preserve or preempt state protections.
Limits: The report describes law as of August 2025 and is not a live fifty-state survey or legal advice. State enactments, effective dates, litigation, and federal proposals continue to change.
Rebecca Diamond, Tim McQuade, Franklin Qian. American Economic Review
A peer-reviewed study of San Francisco's 1994 rent-control expansion that examines effects on incumbent tenants, landlord responses, rental supply, and neighborhood change.
Limits: The study evaluates one city's policy expansion and institutional setting. Its tenant-stability and supply findings should not be assumed to apply unchanged to every rent-regulation design or housing market.
U.S. Department of Energy
A national assessment of historical and anticipated electric-transmission constraints, congestion, reliability needs, and potential value from additional within-region and interregional capacity under multiple scenarios.
Limits: The study synthesizes public data and scenario modeling; it does not select routes, approve projects, eliminate the need for regional engineering analysis, or determine how local costs and impacts should be allocated.
U.S. Department of Justice, Antitrust Division
An official overview of the Sherman and Clayton Acts, including unlawful restraints, monopolization, tying, predatory pricing, and anticompetitive mergers.
Limits: The overview emphasizes enforcement concepts and examples; market definition, power, competitive effects, and remedies require case-specific analysis.
U.S. Department of Labor, Wage and Hour Division
Official administrative data report concluded compliance actions, back wages, workers receiving back wages, and civil money penalties under laws enforced by the Wage and Hour Division.
Limits: Administrative recoveries measure agency activity and detected violations, not the total prevalence of wage theft or other violations. Investigations may apply more than one law in the same compliance action.
Arindrajit Dube, T. William Lester, Michael Reich. The Review of Economics and Statistics, MIT Press
A peer-reviewed study comparing neighboring counties across state borders to estimate wage and employment effects of differing minimum-wage policies in restaurants and other low-wage sectors.
Limits: The study analyzes state-border variation from 1990 through 2006 and particular low-wage sectors. Its design does not directly estimate every later policy, a large nationwide change, or effects outside the studied labor markets.
U.S. Election Assistance Commission
The EAC's biennial report on state and territorial administration of the 2024 federal election, covering registration, voting methods, ballots, poll workers, military and overseas voting, and jurisdiction-level practices.
Limits: The report primarily compiles data supplied by election jurisdictions, definitions and completeness can vary, and the EAC has published errata and revised datasets. Descriptive differences do not by themselves establish causes or policy effects.
U.S. Environmental Protection Agency
EPA's guide to the current Clean Air Act text and corresponding sections of Title 42 of the U.S. Code, including national air-quality, mobile-source, stationary-source, permit, and ozone provisions.
Limits: This is an agency navigation page for a complex, amended statute. Current obligations depend on regulations, state implementation plans, permits, judicial decisions, source category, and location.
U.S. Environmental Protection Agency
A federal synthesis of observed indicators related to the causes and effects of climate change in the United States, with methods and supporting data.
Limits: An indicator report describes observed patterns and supporting science; it does not rank every mitigation or adaptation policy or settle local implementation choices.
U.S. Environmental Protection Agency
EPA's overview of the Safe Drinking Water Act, which authorizes national health-based standards for public drinking-water systems and assigns implementation roles to EPA, states, and water systems.
Limits: The overview does not cover every regulatory detail and notes that the federal law does not regulate private wells serving fewer than 25 people. Compliance and water quality vary by system and contaminant.
U.S. Department of Labor, Wage and Hour Division
An official overview of federal minimum-wage, overtime, recordkeeping, youth-employment, coverage, exemption, and enforcement rules under the Fair Labor Standards Act.
Limits: The guide is general compliance assistance; state law may provide additional protections and specific disputes require current legal analysis.
U.S. Department of Labor, Wage and Hour Division
An official explanation of federal job-protected family and medical leave, including covered employers, employee eligibility, qualifying reasons, and enforcement.
Limits: The federal law is not a universal paid-leave program, contains eligibility and employer-coverage rules, and interacts with state law and workplace policies.
U.S. Department of Education. U.S. Department of Education
An official overview explaining the predominant state and local role in American education and the federal roles in funding, equal access, civil-rights enforcement, data, research, and student aid.
Limits: This is an agency overview, not a complete legal analysis or a current accounting of every federal, state, and local funding stream.
Allison R. Crimmins, Christopher W. Avery, David R. Easterling, Kenneth E. Kunkel, Bradley C. Stewart, Thomas K. Maycock. U.S. Global Change Research Program
A congressionally mandated interagency assessment of climate science, observed and projected risks, regional impacts, mitigation, adaptation, infrastructure, health, ecosystems, and uncertainty in the United States.
Limits: The assessment synthesizes a large evidence base and reports confidence and scenario uncertainty. It does not choose a complete policy package, approve individual projects, or supply one cost estimate for all mitigation and adaptation choices.
Franklin D. Roosevelt. Franklin D. Roosevelt Presidential Library and Museum
The presidential library's presentation of Roosevelt's 1941 annual message identifying freedom of speech, freedom of worship, freedom from want, and freedom from fear.
Limits: A wartime presidential address expresses political aims; it did not itself create enforceable legal rights or programs.
Constitution Annotated, Congress.gov
A congressional legal reference organizing the Fourteenth Amendment's citizenship, due process, equal protection, incorporation, and voting-rights doctrine.
Limits: This is a high-level entry point into a large body of doctrine; legal conclusions require attention to the specific issue, jurisdiction, and current cases.
Federal Trade Commission
An official guide to federal competition law, merger review, agreements among competitors, monopolization, and the roles of the federal antitrust agencies.
Limits: Agency guidance is general and does not resolve fact-specific liability or the empirical effects of every form of concentration.
Federal Trade Commission
A staff report describing interface practices that can obscure, subvert, or impair consumer choice, including hidden terms, difficult cancellation, and designs that steer disclosure of personal information.
Limits: The report presents enforcement and policy analysis rather than a comprehensive prevalence study, and interface practices continue to evolve.
Federal Trade Commission
The FTC's overview of privacy and data-security enforcement, including its use of Section 5 of the FTC Act against unfair or deceptive practices and its authority under specified sectoral statutes.
Limits: An enforcement overview reflects the FTC's jurisdiction and case selection. It does not create a comprehensive federal privacy right, cover every entity, or establish that every harmful data practice violates existing law.
Peter Ganong, Pascal Noel. American Economic Review
A peer-reviewed study using de-identified bank-account data to examine how household spending changes during unemployment and when unemployment-insurance benefits expire.
Limits: Administrative financial data offer detailed spending timing but do not represent every unemployed household or measure every dimension of well-being. The policy implications depend on behavioral and welfare assumptions described by the authors.
U.S. Government Accountability Office
A federal audit examining selected agencies' policies, tracking, reporting, and oversight for Freedom of Information Act proactive-disclosure requirements.
Limits: The audit studied selected agencies and a defined disclosure requirement; findings should not be generalized to every jurisdiction or all transparency systems.
U.S. Government Accountability Office
A federal audit examining physical barriers in public-school facilities, district planning, and the technical assistance provided by the Departments of Justice and Education.
Limits: GAO combined a national district survey with visits to 55 schools in six states. Observed physical barriers do not by themselves establish a legal violation, and facility conditions may have changed since the fieldwork.
U.S. Government Accountability Office. U.S. Government Accountability Office
A federal audit of how Social Security hearing offices identify and expedite disability appeals involving terminal illness, dire financial need, or other critical circumstances.
Limits: The audit studied hearing-level data through fiscal year 2020 and five selected hearing offices; it does not measure current performance across every stage or office.
U.S. Government Accountability Office
A federal audit report examining unemployment-insurance program design, state administration, information technology, equitable access, timeliness, and integrity risks.
Limits: The report focuses on unemployment insurance and lessons sharpened by the pandemic; not every finding transfers to other benefit systems or later reforms.
U.S. Government Accountability Office
A federal audit of early-voting accessibility efforts and challenges reported by selected state, local, advocacy, Justice Department, and Election Assistance Commission officials.
Limits: GAO studied selected states and localities, and expressly states that those findings are not generalizable nationwide. The report concerns 2020-era practices and does not establish current legal compliance in any jurisdiction.
Thyria A. Alvarez, Barry L. Steffen. U.S. Department of Housing and Urban Development, Office of Policy Development and Research
A congressionally directed analysis of severe rent burdens and severely inadequate housing among very-low-income renters who do not receive housing assistance.
Limits: The report uses a defined renter-need measure and 2021 survey data; it does not cover every housing problem or establish the effects of a particular remedy.
U.S. Department of Housing and Urban Development. U.S. Department of Housing and Urban Development, Office of Policy Development and Research
HUD's twentieth biennial report analyzes severe rent burdens and severely inadequate housing among very-low-income renters without housing assistance, using the 2023 American Housing Survey.
Limits: The defined measure does not cover every renter, homeowner, unhoused person, or local market. The report's broader causal interpretations should be evaluated separately from its American Housing Survey estimates.
Office of Special Education Programs. U.S. Department of Education, Office of Special Education Programs
The Department of Education's official overview of the Individuals with Disabilities Education Act, including its free-appropriate-public-education requirement for eligible children and its early-intervention, special-education, and related-service structure.
Limits: The overview summarizes a complex statute and does not determine an individual student's eligibility, services, placement, or remedy.
C. Kirabo Jackson, Rucker C. Johnson, Claudia Persico. The Quarterly Journal of Economics
A peer-reviewed longitudinal study using court-ordered school-finance reforms to estimate how sustained changes in public-school spending affected educational attainment and adult economic outcomes for cohorts born from 1955 through 1985.
Limits: The estimates concern particular cohorts, finance reforms, and historical conditions; they do not show that every additional dollar, spending category, or contemporary reform will produce the same result.
Library of Congress
A Library of Congress exhibition using NAACP and Mary Church Terrell materials to explain the Brownsville Affair, Roosevelt's discharge of Black soldiers without court-martial, contemporary protest, later review, and the episode's place in early civil-rights organizing.
Limits: The exhibition covers a broad institutional history and gives the Brownsville Affair a concise treatment; it is not a complete military, judicial, or presidential-record analysis of the episode.
Library of Congress
A Library of Congress teaching resource connecting Progressive Era antitrust, consumer, labor, election, urban, suffrage, and conservation reforms to industrialization, urbanization, corruption, and concentrated wealth and power.
Limits: This is a concise educational overview and curated primary-source set, not a comprehensive account of Progressive Era movements, regional differences, or exclusions.
Library of Congress
A digitized printed program documenting the March on Washington for Jobs and Freedom and its combined civil-rights and economic-justice agenda.
Limits: The program records the event's stated plans and demands; it does not by itself capture the full movement, participant experience, or policy aftermath.
Charles Blahous. Mercatus Center at George Mason University
A working paper estimating federal fiscal effects and service-capacity pressures under the Medicare for All Act introduced in 2017, with particular attention to provider payments, utilization, and financing assumptions.
Limits: The analysis models one 2017 bill and depends on contestable assumptions about payment rates, utilization, savings, and implementation. It is a critical working paper from a market-oriented research center, not a consensus estimate for every universal-coverage pathway.
U.S. Department of Justice Antitrust Division, Federal Trade Commission. U.S. Department of Justice and Federal Trade Commission
The federal antitrust agencies' current, nonbinding explanation of the factors and analytical frameworks they often use when reviewing mergers, including effects on workers, creators, suppliers, platforms, entry, and innovation.
Limits: The guidelines create no independent rights or obligations and do not decide whether any particular merger is lawful; enforcement remains fact-specific and subject to governing statutes and precedent.
Sarah Miller, Laura R. Wherry. New England Journal of Medicine
A peer-reviewed difference-in-differences study comparing insurance coverage, health-care use, affordability, and self-reported health among low-income adults in Medicaid-expansion and nonexpansion states.
Limits: The study covers the first two years of expansion, relies substantially on survey responses, and estimates policy associations under a quasi-experimental design rather than a randomized national experiment.
National Archives and Records Administration
The historical statute that created the National Labor Relations Board and established federal protections for organizing and collective bargaining in covered private-sector employment.
Limits: Coverage exclusions, later amendments, court decisions, and present enforcement practice require separate current research.
Elham Tabassi. National Institute of Standards and Technology
A voluntary, rights-preserving framework for governing, mapping, measuring, and managing risks from artificial-intelligence systems.
Limits: The framework is voluntary and non-sector-specific, is being revised, and does not by itself create legal duties or remedies.
National Low Income Housing Coalition
An advocacy organization's national, state, and metropolitan-area analysis of rental homes affordable and available to households at several income levels.
Limits: The report comes from an organization that advocates for low-income housing policy. Its shortage measure addresses rental affordability and availability for defined income groups; it is not a causal evaluation of a particular policy response.
Franklin D. Roosevelt. Franklin D. Roosevelt Presidential Library and Museum
The text of Roosevelt's 1944 annual message proposing an economic bill of rights concerned with work, food, housing, health, education, and security.
Limits: The address was a presidential proposal, not an enacted constitutional amendment, and its broad language does not settle institutional design.
Ilya Segal, Michael D. Whinston. American Economic Review
A peer-reviewed theoretical analysis showing that antitrust limits on incumbent conduct can have conflicting effects on entry and incumbent innovation incentives, while identifying settings in which protecting entrants can increase innovation.
Limits: The article develops an economic model rather than estimating the effect of a specific enforcement action; conclusions depend on the strategic and industry conditions in the model.
National Archives and Records Administration
The National Archives presentation and transcript of the 1935 statute establishing federal old-age benefits and a federal-state structure for unemployment compensation and public assistance.
Limits: The original law excluded or treated groups differently and has been repeatedly amended; it is not a statement of current eligibility or benefit rules.
Social Security Administration, Office of the Chief Actuary
Official benefit and trust-fund data for the Old-Age and Survivors Insurance and Disability Insurance programs.
Limits: Program aggregates require separate distributional and policy analysis; the data portal is not a recommendation for any specific solvency change.
Board of Trustees of the Federal Old-Age and Survivors Insurance and Federal Disability Insurance Trust Funds. Social Security and Medicare Boards of Trustees
The annual statutory report on Social Security trust-fund operations, assumptions, and short- and long-range actuarial projections for retirement, survivor, and disability insurance.
Limits: The projections depend on demographic, economic, and policy assumptions and are revised annually. The OASI and DI funds are legally separate even when combined OASDI figures are presented.
Theodore Roosevelt Center at Dickinson State University
A documented overview of Roosevelt's use of the Square Deal idea and its relationship to fair dealing, public authority, and the reform politics of his era.
Limits: This is an institutional historical overview rather than a complete primary-source edition or a full assessment of the era's exclusions.
Larry DeWitt. Social Security Administration, Social Security Bulletin
A detailed examination of the original Social Security coverage exclusions, their unequal occupational effects, the legislative and administrative record, and competing historical explanations for why agricultural and domestic workers were initially left out.
Limits: The author disputes a simple racial-motive account and emphasizes administrative feasibility; the article presents that interpretation rather than settling the wider historical debate. Its findings do not necessarily represent the Social Security Administration's views.
United Nations
The General Assembly declaration setting out a common standard of civil, political, economic, social, and cultural rights and freedoms.
Limits: The declaration is an international norm and historical reference; it is not by itself a directly enforceable domestic claim in United States courts.
Congress.gov, Library of Congress
The constitutional text, amendments, and links to the congressionally prepared Constitution Annotated.
Limits: The constitutional text must be read with case law and doctrine; this entry is not a substitute for legal advice or a current issue-specific survey.
National Archives and Records Administration
The National Archives presentation and transcript of the federal statute enforcing the Fifteenth Amendment and addressing discriminatory voting practices.
Limits: The law has been amended and materially affected by later court decisions; a current voting-law analysis must examine those developments.