Dred Scott v. Sandford (1857) was a Supreme Court decision holding that people of African descent were not U.S. citizens and that Congress could not ban slavery in federal territories. It was overturned by the 13th and 14th Amendments, which created the citizenship and equal protection guarantees you study in AP Gov.
Dred Scott v. Sandford was an 1857 Supreme Court decision in which Chief Justice Roger Taney's Court ruled that people of African descent, enslaved or free, were not citizens of the United States and therefore couldn't sue in federal court or claim Fifth Amendment protections. The Court went further and said Congress had no power under Article I to prohibit slavery in federal territories, which wiped out federal compromises limiting slavery's spread.
For AP Gov, the decision matters most for what it caused. It shredded the Court's credibility in the North, deepened the sectional crisis that led to the Civil War, and was directly overturned by constitutional amendment. The Fourteenth Amendment's opening line, granting citizenship to all persons born or naturalized in the U.S., exists specifically to erase Dred Scott. That makes this case the origin story for birthright citizenship, equal protection, and almost everything in the civil rights unit.
Dred Scott connects to Topic 1.10 (Required Founding Documents) because it exposes the gap between the Declaration of Independence's promise that "all men are created equal" and what the Constitution actually protected before the Civil War. Taney read the founding documents as excluding Black Americans from citizenship entirely. The constitutional response, the Thirteenth and Fourteenth Amendments, rewrote that answer. So when you analyze the Fourteenth Amendment's citizenship and equal protection clauses in Unit 3, or trace how civil rights movements use founding ideals as leverage, Dred Scott is the starting point. It's also the classic example of how a constitutional amendment can override a Supreme Court decision, a check on judicial power worth knowing for Unit 2.
Keep studying AP® Gov Unit 1
Declaration of Independence (Unit 1)
Dred Scott is the sharpest collision between founding ideals and law. Taney ruled that the Declaration's "all men are created equal" was never meant to include Black Americans, which is exactly the gap later civil rights movements attacked.
Fourteenth Amendment and Equal Protection (Unit 3)
The Fourteenth Amendment was written to kill Dred Scott. Its citizenship clause guarantees birthright citizenship, and its equal protection clause becomes the engine behind Brown v. Board and nearly every civil rights case you study.
Letter from Birmingham Jail (Unit 3)
Dr. Martin Luther King Jr. argued that laws denying human dignity are unjust laws rooted in something deeper than majority rule. Dred Scott is the textbook example of legal authority being used to deny natural rights, the exact problem King's natural law argument answers.
Natural law (Unit 1)
Natural law says rights come from human nature, not government. Dred Scott took the opposite view, treating rights as something the political community could grant or withhold by race, which is why critics called the decision morally illegitimate even though it was legally binding.
Dred Scott is not one of the 15 required Supreme Court cases in AP Gov, so you won't be asked to brief it on its own. Where it earns you points is as context and evidence. Multiple-choice stems on the Fourteenth Amendment, birthright citizenship, or the history of equal protection often assume you know what the amendment was reversing. On the Argument Essay or SCOTUS Comparison FRQ, Dred Scott works as powerful supporting evidence for claims about judicial power, the amendment process as a check on the Court, or the long arc from exclusion to equal protection. No released FRQ has required the case by name, but mentioning it accurately when you discuss the Fourteenth Amendment shows the kind of historical reasoning that strengthens an argument.
Both are infamous pro-discrimination rulings, but they did different damage. Dred Scott (1857) denied that Black Americans were citizens at all and was overturned by the Thirteenth and Fourteenth Amendments. Plessy (1896) came after those amendments and gutted equal protection with "separate but equal," which stood until Brown v. Board (1954). Quick check: Dred Scott was fixed by amendment, Plessy was fixed by a later Court decision.
Dred Scott v. Sandford (1857) held that people of African descent were not U.S. citizens and could not claim constitutional protections like the Fifth Amendment.
The Court also ruled that Congress had no Article I power to ban slavery in federal territories, erasing federal limits on slavery's expansion.
The Fourteenth Amendment's citizenship clause was written specifically to overturn Dred Scott by guaranteeing birthright citizenship.
The case is the go-to example of the amendment process acting as a check on the Supreme Court, since a constitutional amendment can erase a Court ruling.
Dred Scott is not one of the 15 required AP Gov cases, but it's essential background for the Fourteenth Amendment, equal protection, and the civil rights unit.
In 1857, the Supreme Court ruled that people of African descent were not U.S. citizens and could not sue in federal court, and that Congress could not prohibit slavery in federal territories. It's widely considered the worst decision in Supreme Court history.
No. Dred Scott is not on the list of 15 required cases. You should still know it because it explains why the Fourteenth Amendment exists, and it makes strong evidence in FRQs about equal protection or checks on the Court.
By constitutional amendment, not by a later Court decision. The Thirteenth Amendment (1865) abolished slavery and the Fourteenth Amendment (1868) granted citizenship to all persons born or naturalized in the U.S., directly reversing Taney's ruling.
Dred Scott (1857) denied citizenship to Black Americans entirely and was erased by the Reconstruction Amendments. Plessy (1896) came after those amendments and upheld segregation under "separate but equal," which lasted until Brown v. Board overturned it in 1954.
The Fourteenth Amendment's first sentence, granting citizenship to everyone born or naturalized in the United States, was written to nullify Dred Scott. Every equal protection case you study in AP Gov, including Brown v. Board, builds on that reversal.
Connect this key term to the AP exam workflow: review the course, practice questions, and check related study tools.
Review units, study guides, and course resources.
Check this vocabulary in multiple-choice context.
Apply key concepts in written AP responses.
Estimate the exam score you are working toward.
Review the highest-yield facts before practice.
Put the full course together before test day.