Dred Scott v. Sandford was the 1857 U.S. Supreme Court decision that ruled people of African descent could not be American citizens and that Congress had no power to prohibit slavery in federal territories. The 7–2 ruling struck down the Missouri Compromise, hardened the sectional conflict over slavery, and is widely regarded by legal scholars as the worst decision the Court has ever issued.1National Archives. Dred Scott v. Sandford (1857) It was overturned after the Civil War by the Thirteenth and Fourteenth Amendments.
Who Dred Scott Was and Why He Sued
Dred Scott was an enslaved man purchased around 1833 in Missouri by Dr. John Emerson, a U.S. Army surgeon. Emerson’s postings took Scott to Fort Armstrong in Illinois, a free state, and then to Fort Snelling in the Wisconsin Territory, where slavery was banned under the Missouri Compromise of 1820.2National Archives. Missouri Compromise (1820) Scott lived in free jurisdictions for several years, married Harriet Robinson at Fort Snelling with Emerson’s consent, and eventually returned with Emerson to Missouri around 1838.
Scott sued for his freedom in 1846 in St. Louis Circuit Court. His argument rested on a Missouri judicial principle known as “once free, always free,” which held that residence in a free state or territory permanently ended a person’s enslavement.3Missouri Secretary of State. Missouri’s Dred Scott Case Missouri courts had freed other enslaved people on these grounds before. A trial court initially ruled for Scott, but the Missouri Supreme Court reversed in 1852, breaking with its own precedent. Scott then refiled in federal court against John F.A. Sanford, the brother of Emerson’s widow, who claimed ownership of the Scott family. A clerical error misspelled Sanford’s name as “Sandford” in the court records, and the misspelling stuck.
What the Supreme Court Decided
Chief Justice Roger B. Taney wrote the majority opinion. The Court delivered three intertwined holdings, each with lasting consequences.
Black Americans Were Not Citizens
Taney first held that Scott could not sue in federal court because he was not a “citizen” within the meaning of Article III, which extends federal jurisdiction to disputes “between citizens of different states.”4Cornell Law Institute. U.S. Constitution Article III The majority concluded that no person of African descent, whether enslaved or free, could be a citizen of the United States. Taney wrote that at the founding, Black people had been regarded as “so far inferior that they had no rights which the white man was bound to respect.”5National Archives. Judgment in the U.S. Supreme Court Case Dred Scott v. John F. A. Sandford That single holding locked an entire class of people out of the federal courts based on race.
The Missouri Compromise Was Unconstitutional
Having found that Scott lacked standing, the Court could have stopped. Taney went further. He read Article IV’s Territory Clause, which lets Congress “make all needful Rules and Regulations respecting the Territory or other Property belonging to the United States,”6Congress.gov. Article IV Section 3 Clause 2 as applying only to lands the federal government held at ratification. On that reading, the Court declared the Missouri Compromise of 1820 unconstitutional, striking down the law that had barred slavery north of the 36°30′ parallel. It was only the second time in American history that the Supreme Court had invalidated an act of Congress.
Slaveholders’ Property Rights Followed Them Anywhere
The majority also invoked the Fifth Amendment, which forbids the federal government from depriving any person of “life, liberty, or property, without due process of law.”7Cornell Law Institute. Fifth Amendment Because enslaved people were classified as property, Taney reasoned, Congress could not free them simply because they entered a particular territory. That would be an unconstitutional taking. The Fifth Amendment, written to protect individual liberty, was turned into a shield for slaveholders, and Scott’s years in free territory were rendered legally meaningless.
The Dissents
Justices Benjamin Robbins Curtis and John McLean dissented. Curtis dismantled Taney’s history, showing that several states had recognized free Black men as citizens with voting rights when the Constitution was ratified. If a person was a citizen of a state at that time, Curtis argued, they were a citizen of the United States as well. Both dissenters also rejected the majority’s narrow reading of congressional power over the territories, pointing to decades of federal regulation there. Those dissents later supplied the intellectual foundation for the constitutional amendments that undid the ruling.
How the Ruling Pushed the Country Toward War
The decision detonated in the middle of an already tense national debate. By declaring that Congress could never prohibit slavery in any territory, the Court closed off the primary legislative route abolitionists had counted on and appeared to nationalize the slaveholder position.
The ruling became the central issue of the 1858 Lincoln-Douglas debates in Illinois. Pressed by Abraham Lincoln to reconcile the decision with his own doctrine of “popular sovereignty,” Stephen Douglas responded with the Freeport Doctrine, arguing that slavery “cannot exist a day or an hour anywhere, unless it is supported by local police regulations.”8National Park Service. The Freeport Doctrine That answer won Douglas his Senate seat but split the Democratic Party. By 1860, Northern and Southern Democrats ran separate presidential candidates, the Republican Party absorbed antislavery voters, Lincoln won the presidency, and Southern states began seceding within months.
How the Ruling Was Overturned
The Civil War settled by force what the Court had tried to settle by decree. The Thirteenth Amendment, ratified on December 6, 1865, abolished slavery throughout the United States except as punishment for a crime.9Congress.gov. U.S. Constitution – Thirteenth Amendment That erased the property-rights foundation of Taney’s Fifth Amendment reasoning.
The Fourteenth Amendment, ratified in 1868, directly repudiated Taney’s definition of citizenship. Its opening sentence declares that “All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside.”10Constitution Annotated. Citizenship Clause Doctrine Where the Court had ruled no person of African descent could ever be an American citizen, the Fourteenth Amendment established birthright citizenship as a constitutional guarantee regardless of race. Together, the two amendments formally overturned Scott v. Sandford.1National Archives. Dred Scott v. Sandford (1857)
What Happened to Dred Scott
Scott did not live to see any of it. Shortly after the ruling, Irene Emerson Chaffee transferred the Scott family to Taylor Blow, a St. Louis resident. On May 26, 1857, weeks after the decision, Dred and Harriet Scott appeared in the St. Louis Circuit Court and were formally freed.3Missouri Secretary of State. Missouri’s Dred Scott Case Dred Scott spent about sixteen months as a free man before dying of tuberculosis on September 17, 1858, at roughly 59 years old.