The Supreme Court is supposed to be the calm, final word on the Constitution. But some of its decisions have divided the country for generations, and a few are now widely seen as moral failures. Here are the most controversial Supreme Court cases in American history and why they sparked so much debate.
What Makes a Case Controversial
Some cases are controversial because history judged them harshly. Others remain controversial because Americans still deeply disagree about the issues involved. It’s worth keeping those two groups separate, because they tell very different stories about the court.
I’ve tried to describe each case fairly, including the arguments on different sides where people still disagree. The goal here is understanding, not scoring political points. You’ll likely find at least one decision on this list you see differently than your neighbor does.
Cases History Has Condemned
Dred Scott v. Sandford (1857)
The court ruled that Black Americans, whether enslaved or free, weren’t citizens and couldn’t sue in federal court. It also struck down the Missouri Compromise, which had limited slavery in some territories. The decision inflamed tensions over slavery and is often cited as a step toward the Civil War. The National Archives keeps the original judgment in its collection of milestone documents.
Plessy v. Ferguson (1896)
This case upheld racial segregation under the doctrine of “separate but equal.” In practice, the facilities provided for Black Americans were almost never equal. The ruling stood until Brown v. Board of Education began dismantling it in 1954.
Buck v. Bell (1927)
The court upheld a Virginia law allowing the forced sterilization of people considered “unfit.” Carrie Buck, a young woman institutionalized by the state, was sterilized as a result. The decision helped legitimize eugenics programs that led to tens of thousands of forced sterilizations across the country, and it has never been formally overturned.
Korematsu v. United States (1944)
During World War II, the court upheld the forced removal and incarceration of Japanese Americans on the West Coast. Fred Korematsu, who refused to report for removal, was convicted, and the court sided with the government. In 2018, the court stated in Trump v. Hawaii that Korematsu was wrongly decided. A federal judge had already overturned Korematsu’s own conviction in 1983 after new evidence showed the government suppressed key intelligence reports, and the National Archives keeps his case file online.
Cases That Still Divide Americans
Roe v. Wade (1973) and Dobbs v. Jackson (2022)
Roe v. Wade held that the Constitution protects a right to abortion, with limits that change during pregnancy. Supporters saw it as protecting personal liberty and privacy, while critics argued the Constitution doesn’t address abortion and the issue should be left to voters. In 2022, Dobbs v. Jackson Women’s Health Organization overturned Roe and returned abortion regulation to the states.
Both decisions remain among the most debated in the court’s history. Supporters of Dobbs see it as restoring the issue to the democratic process. Opponents see it as taking away a right people had relied on for nearly 50 years.
Bush v. Gore (2000)
The 2000 presidential election came down to Florida, where the margin between George W. Bush and Al Gore was a few hundred votes. The court stopped a statewide recount, which effectively decided the election for Bush. Supporters said the recount process was inconsistent and unconstitutional, while critics argued the court shouldn’t have intervened in an election.
Kelo v. City of New London (2005)
The court ruled that a city could use eminent domain to take private homes and transfer the land to private developers for economic development. Critics from across the political spectrum were outraged, arguing that it put ordinary homeowners at the mercy of powerful interests. Many states responded by passing laws limiting eminent domain.
Citizens United v. FEC (2010)
The court ruled that the government can’t limit independent political spending by corporations, unions, and other groups. Supporters argued that political spending is a form of protected speech under the First Amendment. Critics argued it opened the door to unlimited money in elections and gave outsized influence to wealthy interests.
Why Controversy Isn’t Always the Final Word
Some of the court’s most criticized decisions were later reversed, either by the court itself or by constitutional amendments. Dred Scott was overturned by the 13th and 14th Amendments, and Plessy was undone by Brown. That history is a reminder that the court’s decisions aren’t always permanent.
Other controversial cases are still actively debated. People on different sides make serious arguments about the Constitution, the role of courts, and the rights at stake. Understanding those arguments is the first step to having a real conversation about them.
How These Cases Shape the Court Today
Controversial cases don’t just fade away. They come up in confirmation hearings, political campaigns, and new lawsuits challenging old precedents. Every time a justice is nominated, senators ask where they stand on decisions like these. Not every high-stakes ruling ends up divisive, though, and United States v. Nixon is still praised across the political spectrum.
If you want to understand today’s legal debates, these cases are essential reading. They show how the court has changed over time and why so many Americans care deeply about who sits on it. They also show that even the highest court in the land can get things wrong.