In March 1857, the Supreme Court of the United States handed down a decision so sweeping in its denial of Black citizenship, and so aggressive in its defense of slavery's expansion, that it is difficult to find a rival for it among the worst rulings in the Court's history. Dred Scott v. Sandford did not merely deny freedom to one enslaved man after more than a decade of litigation. It declared that no person of African descent, free or enslaved, could ever be a citizen of the United States, and it struck down a federal law that had governed the spread of slavery for nearly four decades. Rather than settling the slavery question, as Chief Justice Roger B. Taney hoped, the decision inflamed sectional tensions and helped propel the country toward civil war.
An Enslaved Man's Long Fight for Freedom
Dred Scott was enslaved in Virginia, later sold to Peter Blow's family, who moved to Missouri, and then sold again around 1833 to Dr. John Emerson, an army surgeon. Emerson's military postings took Scott first to Illinois, a free state under the Northwest Ordinance, and then to Fort Snelling in the Wisconsin Territory, north of the line established by the Missouri Compromise of 1820, where slavery was likewise prohibited by federal statute. Scott lived in these free jurisdictions for several years before Emerson brought him back to the slave state of Missouri.
After Emerson's death, Scott — with the backing of the Blow family, his original owners, who had turned against slavery — sued for his freedom in Missouri state court in 1846, invoking a well-established legal doctrine that residence in free territory made an enslaved person free, a principle Missouri courts themselves had previously upheld. Scott won at the trial level in 1850, but the verdict was overturned by the Missouri Supreme Court in 1852, which broke with the state's own precedent in a ruling shaped by the increasingly hardened proslavery politics of the decade.
Ownership of Scott and his family had by then passed to John F. A. Sanford, the brother of Emerson's widow and a resident of New York, which allowed Scott's lawyers to refile the case in federal court on the grounds of diversity of citizenship between residents of different states. A clerical error in the court records misspelled the defendant's name as "Sandford," and the case has carried that spelling into history ever since. After further defeats in federal circuit court, the case reached the Supreme Court, which heard arguments in 1856 and issued its ruling in March 1857.
Taney's Opinion
Chief Justice Taney wrote the majority opinion for a Court that split 7–2. Taney's reasoning proceeded on two separate, sweeping grounds. First, he held that Dred Scott, as a Black man descended from enslaved Africans, was not and could never be a citizen of the United States within the meaning of the Constitution — regardless of whether he was free or enslaved, and regardless of any state's decision to grant him citizenship at the state level. Taney wrote that at the time the Constitution was adopted, Black people had been regarded as "beings of an inferior order" with "no rights which the white man was bound to respect," and that nothing in the Constitution's text or history changed that status. Because Scott was not a citizen, Taney reasoned, he had no standing to sue in federal court in the first place, and the case could have ended there.
Taney went further. He ruled that Congress had no constitutional power to prohibit slavery in the federal territories at all, because doing so deprived slaveholders of their property — enslaved people — without due process of law, a violation of the Fifth Amendment. This holding declared the Missouri Compromise of 1820, which had barred slavery north of the 36°30' parallel and had already been effectively superseded by the Kansas-Nebraska Act of 1854, unconstitutional. It was only the second time in the Court's history, after Marbury v. Madison in 1803, that the Supreme Court had struck down an act of Congress.
Justices Benjamin Curtis and John McLean dissented sharply. Curtis, in particular, produced a detailed historical rebuttal demonstrating that Black men had in fact been recognized as citizens with voting rights in several states at the time the Constitution was ratified, directly contradicting Taney's central premise.
A Nation Pushed Toward the Brink
The ruling landed in an already combustible political environment. Republicans, the young antislavery party formed in 1854 largely in opposition to the expansion of slavery into the territories, denounced the decision as proof that a "Slave Power" conspiracy controlled the federal government, including now the judiciary. Abraham Lincoln, then building his political career in Illinois, attacked the decision repeatedly in his 1858 debates with Stephen Douglas, arguing that if Dred Scott were correct, slavery could theoretically be forced into every state in the Union, since no territory or new state could constitutionally exclude it. Douglas, defending his own doctrine of "popular sovereignty," found himself in an awkward position, since Taney's ruling seemed to leave territorial legislatures no power to bar slavery either — a contradiction Douglas never fully resolved and that split his own Democratic Party in 1860.
In the South, by contrast, the decision was celebrated as a vindication of slaveholders' constitutional rights, further entrenching the sectional divide that would erupt into war within four years.
Freedom, and a Verdict That Would Not Stand
Ironically, Dred Scott himself gained his freedom within months of the ruling that declared him permanently unfree. Ownership of Scott had passed back into the hands of the Blow family, his original owners, who purchased and formally manumitted him and his wife in May 1857. Scott worked as a hotel porter in St. Louis for little more than a year before dying of tuberculosis in September 1858.
The Dred Scott decision itself did not survive nearly as long as its author might have hoped. The Civil War, the Emancipation Proclamation, and finally the Thirteenth and Fourteenth Amendments — the latter explicitly overturning Taney's citizenship holding by declaring that all persons born in the United States are citizens — dismantled the ruling's legal foundations within little more than a decade of its issuance. Historians and legal scholars have consistently ranked Dred Scott v. Sandford among the very worst decisions in the Supreme Court's history, not only for the immediate injustice it inflicted but for how directly its sweeping overreach helped foreclose any peaceful political resolution to the question of slavery's expansion.
