What Was the Dred Scott Case About: Ruling and Overturning

The Dred Scott case was an 1857 Supreme Court decision in which an enslaved man named Dred Scott sued for his freedom on the ground that he had lived for years in free territory, and the Court ruled against him in sweeping terms: Black people, whether enslaved or free, were not citizens of the United States and could not sue in federal court, and Congress had no power to ban slavery in federal territories.¹ The 7–2 ruling struck down the Missouri Compromise of 1820, inflamed the national fight over slavery, and is widely regarded as one of the worst decisions the Court has ever issued.²

Who Dred Scott Was and What He Was Suing For

Dred Scott was enslaved by Dr. John Emerson, a U.S. Army surgeon. As the Army moved Emerson between posts, Scott traveled with him to Fort Armstrong in Illinois, a free state, in 1833, and then in 1836 to Fort Snelling in the Wisconsin Territory, where federal law banned slavery.³ At Fort Snelling, Scott married Harriet Robinson, and the couple had two daughters. The family eventually returned to Missouri, a slave state.

Emerson died in 1843, and ownership passed to his widow, Irene Emerson. In April 1846, Dred and Harriet Scott filed separate lawsuits in the St. Louis Circuit Court, each arguing that their years of residence in free territory had legally ended their enslavement.⁴ Their claim rested on a well-established doctrine known as “once free, always free”: a person taken into a jurisdiction where slavery was prohibited became permanently free, even if they later returned to a slave state. Missouri courts had honored that principle for decades.

How the Case Reached the Supreme Court

A Missouri jury ruled in Scott’s favor in 1850, finding that his residence in free territory had made him free. Two years later, the Missouri Supreme Court reversed that verdict, breaking with the state’s own precedent and holding that Missouri was not obligated to enforce another jurisdiction’s antislavery laws. The national fight over slavery had hardened, and the state court’s opinion reflected that shift.

Scott then filed a new suit in federal court against John Sanford, Irene Emerson’s brother, who was managing the Scott family on her behalf. Because Sanford lived in New York, the federal court had jurisdiction over a dispute between residents of different states. The federal circuit court ruled against Scott, and he appealed to the U.S. Supreme Court.

What the Supreme Court Decided

Chief Justice Roger B. Taney’s majority opinion went far beyond the question of whether Scott was free. It delivered two rulings, either of which would have been momentous on its own.

Black People Could Not Be Citizens

Taney held that no Black person, enslaved or free, could be a citizen of the United States, and therefore no Black person had standing to sue in federal court.¹ He argued that when the Constitution was written, Black people were “regarded as beings of an inferior order” and were never intended to be included in “We the People.” Individual states could grant local rights to free Black residents, Taney conceded, but state-level recognition did not create national citizenship or open the doors of federal courts.⁵

A finding of no jurisdiction would normally end a case. Taney did not stop there.

Congress Could Not Ban Slavery in the Territories

The majority went on to strike down the Missouri Compromise of 1820, which had drawn a line at the 36°30′ parallel: slavery was permitted in new territory south of the line and banned north of it. The compromise had governed slavery’s expansion for more than three decades.

Taney’s reasoning ran through the Fifth Amendment’s guarantee that no person could be deprived of property without due process of law. The Court treated enslaved people as property, and held that Congress could not strip a slaveholder of that property simply because he moved into a northern territory.² The majority also rejected the argument that Congress had broad authority to govern federal territories, holding that the federal government acted only as a trustee for the citizens of all states and could not favor one region’s views on slavery over another’s.¹ This was only the second time in American history the Supreme Court had struck down a major act of Congress, the first being Marbury v. Madison.

The practical effect was sweeping. If Congress could not ban slavery in the territories, the Missouri Compromise line meant nothing. The ruling also undercut the popular sovereignty principle in the Kansas-Nebraska Act of 1854, because if slaveholders had a constitutional right to bring enslaved people anywhere, a territorial vote against slavery would be just as unconstitutional as a congressional one.

The Dissents

Justices Benjamin Curtis and John McLean dissented. Curtis attacked Taney’s history head-on: at the time the Constitution was adopted, five states allowed Black men to vote, which meant they were citizens of their states and, by extension, of the United States with standing to sue in federal court.² Curtis also pointed out the contradiction at the heart of the majority opinion: if the Court had no jurisdiction, it had no business ruling on the Missouri Compromise.

McLean went after the property argument. Slavery, he wrote, was a local institution that existed only where specific laws created and sustained it; once an enslaved person entered a jurisdiction with no such law, slavery’s legal basis evaporated. He also defended Congress’s power over the territories, noting that for nearly sixty years no serious legal authority had questioned it.⁶

Why the Decision Mattered

The ruling was intended to settle the slavery question. It did the opposite. Antislavery Northerners were outraged: the decision told the entire free-state population that Congress was constitutionally powerless to stop slavery from expanding into any territory. The Republican Party, founded just three years earlier on a platform opposing slavery’s expansion, saw its central policy objective declared unconstitutional.

The 1858 Senate debates between Abraham Lincoln and Stephen Douglas turned partly on how Douglas could reconcile popular sovereignty with a ruling that said territorial bans on slavery were unconstitutional. His awkward answers split the Democratic Party and helped set the stage for Lincoln’s presidential victory in 1860. Several Northern state legislatures responded by passing laws declaring that any enslaved person who set foot on their soil was immediately free. Within four years of the decision, the country was at war.

How the Ruling Was Overturned

The Civil War and its aftermath buried the decision. The Thirteenth Amendment, ratified on December 6, 1865, abolished slavery throughout the United States, eliminating the property framework Taney had used to protect slaveholders.⁷

The Fourteenth Amendment, ratified in 1868, directly overturned Taney’s citizenship ruling. Its opening line reads as a point-by-point repudiation: “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.”⁸ The amendment also guaranteed due process and equal protection of the laws, protections the Dred Scott Court had reserved for white property owners. Together, the two amendments wrote into the Constitution the principle that citizenship belongs to everyone born on American soil, regardless of race or ancestry.

What Happened to Dred Scott

The Supreme Court ordered Scott’s case dismissed, but he did not die enslaved. Irene Emerson had remarried an abolitionist congressman from Massachusetts, Calvin Chaffee. Weeks before the ruling came down, Chaffee arranged to transfer ownership of the Scott family to Taylor Blow, a childhood friend of Scott’s who lived in St. Louis, because Missouri law required that only a state resident could formally free an enslaved person there.³

On May 26, 1857, less than three months after the Supreme Court declared he could never be a citizen, Dred and Harriet Scott were formally emancipated in the St. Louis Circuit Court. Scott worked as a hotel porter in St. Louis and died of tuberculosis on September 17, 1858, roughly sixteen months after gaining his freedom.³

1
National Archives. Dred Scott v. Sandford (1857)
2
Oyez. Dred Scott v. Sandford
3
Missouri Secretary of State. Dred Scott Case, 1846-1857
4
National Park Service. Suing for Freedom, Dred and Harriet Scotts Case at the Old Courthouse
5
Justia. Dred Scott v. Sandford
6
Maryland State Archives. Dred Scott v. Sandford, Mr. Justice McLean Dissenting
7
National Archives. 13th Amendment to the U.S. Constitution – Abolition of Slavery (1865)
8
National Museum of African American History and Culture. Reconstructing Citizenship