100 Most Important Laws in American History

Name the 100 most important and impactful laws in American History
Many of the laws on here may not end with 'Act.' They may also be referred to by their more common name.
Type-ins on this quiz are expansive. However, abbreviations or the law will NOT work.
One law, marked in gold, was passed before the Constitution took effect.
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FNWY4life
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Last updated: March 21, 2026
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First submittedMarch 21, 2026
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Field
Law
1960s
Civil Rights
Civil Rights Act of 1964
1960s
Civil Rights
Voting Rights Act of 1965
1930s
Welfare
Social Security Act
1820s
Statehood
Missouri Compromise
1940s
Foreign Aid
Marshall Plan
2010s
Healthcare
Affordable Care Act
1850s
Statehood
Kansas-Nebraska Act
1930s
Unions
National Labor Relations Act
1850s
Slavery
Compromise of 1850
1890s
Business
Sherman Antitrust Act
1950s
Infrastructure
Federal Aid Highway Act
1780s
Courts
Judiciary Act
1990s
Civil Rights
Americans with Disabilities Act
1860s
Civil Rights
Civil Rights Act of 1866
1860s
Statehood
Reconstruction Acts
1830s
Indian Affairs
Indian Removal Act
1940s
Veterans
Servicemen's Readjustment Act
1780s
Development
Northwest Ordinance
1860s
Development
Homestead Act
1960s
Accountability
Freedom of Information Act
1960s
Civil Rights
Fair Housing Act
1970s
Environment
Clean Water Act
1930s
Finance
Banking Act of 1933
2000s
Security
USA PATRIOT Act
1910s
Finance
Federal Reserve Act
1940s
Foreign Aid
Lend-Lease Act
1790s
Security
Alien and Sedition Acts
1900s
Business
Pure Food and Drug Act
1930s
Business
Fair Labor Standards Act
1880s
Accountability
Pendleton Civil Service Reform Act
1930s
Business
National Industrial Recovery Act
1790s
Slavery
Fugitive Slave Act of 1793
1880s
Immigration
Chinese Exclusion Act
1970s
Business
Occupational Health and Safety Act
1940s
Union
Labor-Management Relations Act
1800s
Slavery
Slave Trade Prohibition Act
1970s
Accountability
War Powers Resolution Act
2020s
Welfare
CARES Act
1910s
Prohibition
National Prohibition Act of 1919
1960s
Education
Elementary and Secondary Education Act
1790s
Finance
Act Establishing the First National Bank
1960s
Immigration
Immigration and Nationality Act of 1965
1960s
Environment
Clean Air Act of 1963
1870s
Security
Enforcement Acts of 1870 and 1871
1920s
Immigration
Immigration Acts of 1921 and 1924
1910s
Military
Selective Service Act
1930s
Finance
Security Exchange Act
1900s
Business
Federal Meat Inspection Act
1860s
Civil Rights
Freedmen's Bureau Act
1880s
Business
Interstate Commerce Act
1970s
Business
Consumer Product Safety Act
1960s
Welfare
Social Security Amendments
1970s
Wildlife
Endangered Species Act
1940s
Foreign Affairs
United Nations Participation Act
1930s
Agriculture
Agricultural Adjustment Act
2010s
Finance
Dodd-Frank Act
1990s
Business
Family and Medical Leave Act
1930s
Tariffs
Tariff Act of 1930
1940s
Security
National Security Act of 1947
2000s
Finance
Troubled Asset Relief Program
1960s
Welfare
Food Stamp Act
1960s
Environment
National Environmental Policy Act of 1969
1910s
Business
Clayton Antitrust Act
1910s
Security
Sedition Act of 1918
1910s
Security
Espionage Act of 1917
1870s
Civil Rights
Civil Rights Act of 1875
1930s
Accountability
Hatch Act
1970s
Healthcare
Hyde Amendment
1810s
Finance
Act Establishing the Second National Bank
1860s
Development
Morrill Act
1990s
Safety
Violence Against Women Act
2010s
Civil Rights
Don't Ask Don't Tell Repeal Act
1910s
Business
Keating-Owen Child Labor Act
1950s
Civil Rights
Civil Rights Act of 1957
1940s
Accountability
Administrative Procedure Act
1920s
Civil Rights
Indian Citizenship Act
1970s
Security
Foreign Intelligence Service Act
2000s
Campaigns
Campaign Reform Act
2000s
Welfare
American Recovery and Reinvestment Act
2000s
Education
No Child Left Behind Act
1970s
Business
Airline Deregulation Act
1990s
Civil Rights
Religious Freedom Restoration Act
1950s
Science
National Aeronautics and Space Act
1970s
Campaigns
Federal Election Campaign Amendments
1950s
Business
Defense Production Act
1990s
Safety
Violent Crime Control and Law Enforcement Act
1990s
Voting
Motor Voter Act
1980s
Accountability
Whistleblower Protection Act
1990s
Safety
Brady Handgun Violence Protection Act
1960s
Civil Rights
Equal Pay Act of 1963
1980s
Environment
Superfund Act
1960s
Education
Higher Education Act
1940s
Immigration
Alien Registration Act
1980s
Immigration
Immigration Reform and Control Act
1950s
Education
National Defense Education Act
1990s
Business
Telecommunications Act
1790s
Finance
Funding and Debt Assumption Act
1960s
Safety
Omnibus Crime Control and Safe Streets Act
1930s
Business
Communications Act of 1934
1790s
Business
Copyright Act of 1790
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