Most Consequential Supreme Court Decisions

Marbury v. Madison

John Marshall's 1803 sleight of hand invented judicial review out of near-nothing, giving the Court the power to strike down acts of Congress. Every landmark on this list exists only because Marbury first established that the Court gets the final word on constitutionality. It's t

Year Decided: 1803Vote Split: UnanimousHistorical Impact: 10/10Area of Law: Judicial review

added by IJRin 2 rankingsMarbury v. Madison

Brown v. Board of Education

A unanimous 1954 ruling that 'separate but equal' schools were inherently unequal, Brown demolished the legal architecture of Jim Crow and ignited the modern civil rights movement. Chief Justice Warren engineered the 9-0 vote precisely to signal the nation had no room for dissent

Year Decided: 1954Vote Split: 9-0Historical Impact: 10/10Area of Law: Civil rights/education

added by IJRin 2 rankingsBrown v. Board of Education

Roe v. Wade

Roe found a constitutional right to abortion in the penumbra of privacy, transforming American politics for the next half-century and making the Supreme Court itself a campaign issue. It energized both a pro-choice movement and a conservative legal counter-movement that eventuall

Year Decided: 1973Vote Split: 7-2Historical Impact: 9/10Area of Law: Abortion rights

added by IJRin 2 rankings

Dobbs v. Jackson Women's Health Organization

Dobbs overturned Roe outright in 2022, returning abortion regulation to the states and triggering an immediate, chaotic patchwork of bans and protections across the country. It proved that even 50-year-old precedents aren't safe, reshaping both electoral politics and interstate t

Year Decided: 2022Vote Split: 6-3Historical Impact: 9/10Area of Law: Abortion rights

added by IJRDobbs v. Jackson Women's Health Organization

Obergefell v. Hodges

Obergefell made same-sex marriage a nationwide constitutional right in 2015, ending decades of state-by-state fights almost overnight. Justice Kennedy's soaring language about dignity and love became instantly iconic, and the ruling reshaped family law, benefits, and adoption acr

Year Decided: 2015Vote Split: 5-4Historical Impact: 9/10Area of Law: Marriage equality

added by IJRin 2 rankingsObergefell v. Hodges

Citizens United v. FEC

Citizens United tore down limits on corporate and union political spending, unleashing the era of super PACs and nine-figure campaign war chests. Critics say it let money flood elections; supporters call it a First Amendment triumph. Either way, it rewired how American politics i

Year Decided: 2010Vote Split: 5-4Historical Impact: 8/10Area of Law: Campaign finance

added by IJRin 2 rankings

Plessy v. Ferguson

Plessy enshrined 'separate but equal' as constitutional doctrine in 1896, giving legal cover to nearly sixty years of Jim Crow segregation until Brown finally reversed it. Justice Harlan's lone dissent, insisting the Constitution is colorblind, became one of history's most presci

Year Decided: 1896Vote Split: 7-1Historical Impact: 9/10Area of Law: Segregation

added by IJRin 2 rankingsPlessy v. Ferguson

Dred Scott v. Sandford

Dred Scott declared that Black Americans, enslaved or free, could never be citizens, and that Congress couldn't ban slavery in the territories, helping ignite the Civil War. Widely regarded as the Court's worst decision ever, it was effectively erased by the 13th and 14th Amendme

Year Decided: 1857Vote Split: 7-2Historical Impact: 9/10Area of Law: Slavery/citizenship

added by IJRin 2 rankingsDred Scott v. Sandford

Miranda v. Arizona

Miranda gave America the phrase 'you have the right to remain silent,' requiring police to inform suspects of their rights before interrogation. It fundamentally changed how every arrest in the country is conducted, embedding itself into pop culture as much as law. Fifty-plus yea

Year Decided: 1966Vote Split: 5-4Historical Impact: 8/10Area of Law: Criminal procedure

added by IJRin 2 rankingsMiranda v. Arizona

Gideon v. Wainwright

Gideon established that anyone facing serious criminal charges has a constitutional right to a lawyer, even if they can't afford one. Clarence Gideon's handwritten prison appeal became the basis for public defender systems nationwide. It's a quiet but massive expansion of due pro

Year Decided: 1963Vote Split: 9-0Historical Impact: 8/10Area of Law: Right to counsel

added by IJRin 2 rankingsGideon v. Wainwright

Loving v. Virginia

Loving struck down bans on interracial marriage in 1967, unanimously declaring that marriage is a fundamental right the state can't restrict by race. Richard and Mildred Loving's name became eternally fitting for the ruling that freed them. It later became the legal cornerstone c

Year Decided: 1967Vote Split: 9-0Historical Impact: 8/10Area of Law: Marriage/race

added by IJRin 2 rankingsLoving v. Virginia

Bush v. Gore

Bush v. Gore halted the Florida recount and effectively decided the 2000 presidential election, handing the White House to George W. Bush. The Court's own majority seemed uneasy, limiting the ruling's reasoning to 'present circumstances only.' It remains a flashpoint for debates

Year Decided: 2000Vote Split: 5-4Historical Impact: 8/10Area of Law: Elections

added by IJRin 2 rankingsBush v. Gore

Griswold v. Connecticut

Griswold struck down a ban on contraceptives for married couples, and in doing so invented the constitutional right to privacy that would later underpin Roe and Obergefell. It's the quiet hinge on which decades of personal-liberty jurisprudence swings. Without Griswold's privacy

Year Decided: 1965Vote Split: 7-2Historical Impact: 8/10Area of Law: Privacy

added by IJRin 2 rankingsGriswold v. Connecticut

McCulloch v. Maryland

McCulloch affirmed Congress's implied powers and federal supremacy over states, giving the national government the constitutional muscle to actually govern. Marshall's ruling that states can't tax federal institutions settled a fight over federalism that could have crippled the y

Year Decided: 1819Vote Split: UnanimousHistorical Impact: 8/10Area of Law: Federal power

added by IJRin 2 rankingsMcCulloch v. Maryland

Korematsu v. United States

Korematsu upheld the internment of Japanese Americans during WWII, a decision now almost universally condemned as a moral and legal disaster. It showed how easily the Court can bless government overreach in the name of wartime security. Though never formally overturned until deca

Year Decided: 1944Vote Split: 6-3Historical Impact: 7/10Area of Law: Wartime civil liberties

added by IJRin 2 rankingsKorematsu v. United States

District of Columbia v. Heller

Heller was the first ruling to clearly affirm an individual's right to keep a handgun at home for self-defense, reinterpreting the Second Amendment for the modern era. It reshaped gun control litigation nationwide and set the stage for later expansions of gun rights. Gun-rights a

Year Decided: 2008Vote Split: 5-4Historical Impact: 7/10Area of Law: Gun rights

added by IJRin 2 rankingsDistrict of Columbia v. Heller

Shelby County v. Holder

Shelby County gutted the preclearance formula of the Voting Rights Act, freeing states with histories of discrimination from federal oversight of election law changes. Within hours, several states moved to enact new voting restrictions. It's cited as a major turning point in the

Year Decided: 2013Vote Split: 5-4Historical Impact: 7/10Area of Law: Voting rights

added by IJRShelby County v. Holder

Regents of the University of California v. Bakke

Bakke banned rigid racial quotas in college admissions while allowing race to be considered as one factor among many, setting the affirmative action framework that lasted 45 years. Justice Powell's fractured, controlling opinion became the law of the land almost by accident. It d

Year Decided: 1978Vote Split: 5-4Historical Impact: 6/10Area of Law: Affirmative action

added by IJRRegents of the University of California v. Bakke

Wickard v. Filburn

Wickard let Congress regulate a farmer growing wheat purely for his own use, on the theory that even personal, non-commercial activity affects interstate commerce in the aggregate. It became the outer limit of federal Commerce Clause power, cited in everything from labor law to t

Year Decided: 1942Vote Split: UnanimousHistorical Impact: 6/10Area of Law: Commerce clause

added by IJRWickard v. Filburn