Dred Scott v. Sandford was the March 6, 1857, U.S. Supreme Court decision that ruled 7–2 that no person of African descent could be a citizen of the United States and that Congress had no power to ban slavery in federal territories.1National Archives. Dred Scott v. Sandford (1857) Legal scholars routinely rank it as the worst decision the Court has ever issued, and it pushed the country measurably closer to civil war. The defendant’s real surname was Sanford; the double-f in the official case name is a clerical error that has stuck for more than 160 years.
How the Case Reached the Supreme Court
Dred Scott was an enslaved man owned by Dr. John Emerson, a U.S. Army surgeon. In 1834, Emerson took Scott from Missouri, a slave state, to Fort Armstrong in Illinois, where slavery was banned under both the Northwest Ordinance of 1787 and the 1818 state constitution. Two years later, Emerson moved again to Fort Snelling in what is now Minnesota, territory where slavery was prohibited by the Missouri Compromise of 1820.2National Park Service. Dred Scott Chronology At Fort Snelling, Dred married Harriet Robinson. The Scotts eventually returned to Missouri with Emerson.
After Emerson died in 1843, the Scotts tried to buy their freedom from his widow, Irene Emerson. She refused. On April 6, 1846, Dred and Harriet each filed suit in St. Louis Circuit Court, arguing that their years of residence on free soil had ended their enslavement.3National Park Service. The Dred Scott Case – Gateway Arch National Park They relied on Missouri’s long-standing “once free, always free” doctrine, which had freed other enslaved people in similar circumstances.
A lower court initially ruled for Scott, but in 1852 the Missouri Supreme Court reversed, breaking sharply from decades of its own precedent.1National Archives. Dred Scott v. Sandford (1857) Scott’s attorneys then filed a new suit in federal court against John Sanford, Irene Emerson’s brother, who had taken over managing the family’s affairs. The Supreme Court heard oral arguments in 1856.
The Ruling on Citizenship
Chief Justice Roger B. Taney wrote for the majority. He framed the threshold question bluntly: could a person of African descent bring a lawsuit in federal court at all? His answer was no. Federal jurisdiction over suits between residents of different states requires that both parties be citizens, and Taney concluded that no person descended from enslaved Africans could ever qualify as a citizen of the United States.4Justia. Dred Scott v. Sandford
Taney’s reasoning was originalist. He argued that the framers had viewed people of African descent as “a separate class of persons” never intended to share in the rights of citizenship, and he pointed to founding-era slave codes and racial restrictions as evidence that the exclusion was deliberate and permanent. Under this logic, even free Black people who voted and owned property in their home states could not be citizens in the federal sense, and no state could make them so.
The conclusion swept well beyond what was needed to resolve Scott’s case. It closed the federal courthouse door on every Black person in America, free or enslaved, regardless of what any state recognized.
Striking Down the Missouri Compromise
Having denied Scott standing, the Court could have stopped. It did not. Taney went on to address the constitutionality of the Missouri Compromise of 1820, which had drawn a geographic line across the Louisiana Purchase territory and banned slavery north of it. He argued that enslaved people were constitutionally protected property under the Fifth Amendment’s Due Process Clause, and that Congress could not strip slaveholders of that property merely because they crossed into a territory.5Oyez. Dred Scott v. Sandford
On that reasoning, the Court declared the Missouri Compromise unconstitutional. It was only the second time in American history that the Supreme Court had struck down an act of Congress, the first being Marbury v. Madison in 1803.6Federal Judicial Center. Marbury v. Madison (1803) The practical effect was enormous. If Congress could not ban slavery in the territories, the whole framework of compromises that had held the Union together was legally void.
The majority read Congress’s power over territories under Article IV as limited to managing land on its way to statehood, not dictating what forms of property citizens could bring with them.7Congress.gov. Article IV Section 3 Clause 2 – Territory and Other Property By treating human beings as indistinguishable from any other asset, the Court removed the main tool free states had used to contain slavery’s spread.
The Dissents
Justices Benjamin Curtis and John McLean dissented, and their opinions are among the most cited dissents in American legal history. Curtis attacked the citizenship analysis with a historical fact: at the time the Constitution was ratified, free Black men in at least five states possessed the right to vote.4Justia. Dred Scott v. Sandford If they were voters, they were citizens of those states, and if they were citizens of a state, they were citizens of the United States. Taney’s version of founding-era history, Curtis argued, was simply wrong.
McLean took aim at the property argument. Slavery, he wrote, was a creature of local law. It existed only where specific statutes created and sustained it. When an enslaved person was taken into territory where no such laws existed, the legal basis for holding them in bondage disappeared. The Fifth Amendment protected lawful property, but whether a human being could be property at all depended on the law of the place where they stood.
Both dissenters also rejected the majority’s reading of Congress’s territorial power. The Constitution plainly says Congress may “make all needful Rules and Regulations” for the territories, and past Congresses had used that power to restrict slavery for decades without serious constitutional challenge.7Congress.gov. Article IV Section 3 Clause 2 – Territory and Other Property
Political Fallout
Rather than settling the slavery question, the decision inflamed it. The ruling enraged abolitionists and energized the young Republican Party, which had formed just three years earlier largely in opposition to slavery’s expansion. During the 1858 Illinois Senate race, Abraham Lincoln made the decision central to his debates with Stephen Douglas. Lincoln argued that the ruling laid the groundwork for spreading slavery not just into the territories but eventually into the free states themselves, and he urged voters to resist it as a political rule even while accepting it as binding law in Scott’s individual case.
By 1860, the Republican Party platform explicitly condemned the reasoning behind the decision, calling the idea that the Constitution automatically carried slavery into every territory “a dangerous political heresy” that was “revolutionary in its tendency, and subversive of the peace and harmony of the country.” The platform declared that the “normal condition” of all federal territory was freedom. Lincoln won the presidency on that platform, and within months, southern states began seceding.1National Archives. Dred Scott v. Sandford (1857)
How the Constitution Overturned the Decision
The Civil War accomplished by force what the courts had refused to do by law. The Thirteenth Amendment, ratified in 1865, abolished slavery throughout the United States, declaring that “neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States.”8Congress.gov. U.S. Constitution – Thirteenth Amendment That sentence destroyed the legal foundation of the Court’s property analysis. If no person could be held as a slave, no person could be classified as property under the Fifth Amendment.
The Fourteenth Amendment, ratified in 1868, targeted the citizenship holding directly. Its opening line reads: “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.”9Congress.gov. U.S. Constitution – Fourteenth Amendment That language was written specifically to overturn Dred Scott. Where Taney declared that no person of African descent could ever be a citizen, the Fourteenth Amendment made citizenship automatic for anyone born on American soil, regardless of race. Together, the two amendments did not just reverse the decision. They made its core holdings constitutionally impossible to revive.
What Happened to Dred Scott
The Supreme Court’s ruling meant nothing good for Dred Scott on paper, but his personal story took an unexpected turn. Irene Emerson remarried and transferred the Scotts back to the Blow family in St. Louis, the family that had originally owned Dred before selling him to Emerson. On May 26, 1857, less than three months after the decision, Taylor Blow formally emancipated Dred, Harriet, and their two daughters. Dred Scott lived as a free man for barely a year. He died of tuberculosis on September 17, 1858, and was buried in what is now Calvary Cemetery in north St. Louis.
Harriet Scott outlived her husband by more than two decades. She worked as a laundress in St. Louis, largely avoiding public attention, and lived long enough to see the ratification of both the Thirteenth and Fourteenth Amendments.
Dred Scott v. Sandford stands as a permanent example of what happens when the Court uses its authority to entrench injustice rather than check it. Legal scholars routinely place it at the top of the “anti-canon,” decisions so deeply wrong that they serve as landmarks of how not to interpret the Constitution.1National Archives. Dred Scott v. Sandford (1857) It took a constitutional amendment to undo what the Court did in a single opinion, and the country paid for that opinion with 600,000 lives.