Korematsu v. United States is the 1944 Supreme Court decision that upheld the forced removal of roughly 120,000 Japanese Americans from the West Coast during World War II. The Court ruled 6-3 that military necessity could justify excluding an entire ethnic group from a designated zone, even as it declared that racial classifications by the government demand the most rigid judicial scrutiny. The ruling stood as binding precedent for 74 years. In 2018, the Court finally said what dissenters and historians had long argued: the decision was “gravely wrong the day it was decided.”
What the Court Decided
Justice Hugo Black, writing for the majority, upheld Fred Korematsu’s conviction for refusing to leave his home in Oakland, California, under Civilian Exclusion Order No. 34. The opinion opened with a principle that would outlast the case itself: “All legal restrictions which curtail the civil rights of a single racial group are immediately suspect,” and courts “must subject them to the most rigid scrutiny. Pressing public necessity may sometimes justify the existence of such restrictions; racial antagonism never can.”1Cornell Law Institute. Korematsu v. United States
Those words laid the groundwork for the strict scrutiny standard that shapes modern civil rights law. The majority then failed to apply that standard in any meaningful way. Having said racial classifications demand searching review, the Court deferred to the military’s judgment that there was no time to sort loyal citizens from potentially disloyal ones. The exclusion, Black wrote, bore “a definite and close relationship to the prevention of espionage and sabotage.”1Cornell Law Institute. Korematsu v. United States
Black insisted the exclusion was not about race but about military urgency, and that the Court should not use “the calm perspective of hindsight” to second-guess wartime tactical decisions. The judgment of military authorities and Congress, he wrote, could not be rejected as unfounded.
How the Case Reached the Court
Executive Order 9066, signed by President Franklin D. Roosevelt on February 19, 1942, authorized the Secretary of War to designate military areas and exclude “any or all persons” from them.2Federal Register. Day of Remembrance of Japanese American Incarceration During World War II The order named no ethnic group. Lieutenant General John L. DeWitt of the Western Defense Command applied it almost exclusively to people of Japanese ancestry, first through curfews and then through full exclusion orders that funneled residents into assembly centers and inland incarceration camps.3National Archives. Executive Order 9066 – Resulting in Japanese-American Incarceration No comparable mass removal was imposed on Americans of German or Italian descent. Congress made violations a federal misdemeanor through Public Law 503 in March 1942.4Constitution Annotated. ArtII.S2.C1.1.4 Evacuation of the West Coast Japanese
Fred Korematsu was a 23-year-old American citizen born in Oakland. When exclusion orders reached his family, his parents complied and abandoned their flower nursery. He did not. Police arrested him on a San Leandro street on May 30, 1942.5United States Courts. Facts and Case Summary – Korematsu v. U.S. A federal court convicted him and placed him on five years of probation. The ACLU carried the appeal to the Supreme Court in the fall of 1944.
His lawyers argued the government had stripped him of liberty without any individual determination that he posed a threat. No hearing. No evidence. No chance to demonstrate loyalty. Less drastic alternatives, like individual loyalty reviews, could have identified any real security risks without uprooting an entire community.6Justia. Korematsu v. United States
The Three Dissents
Three justices dissented. Their opinions have aged better than the majority’s.
Justice Murphy on the Legalization of Racism
Frank Murphy called the exclusion order the “legalization of racism.” He argued that the government relied on unsubstantiated claims about Japanese American disloyalty rather than actual intelligence, and that “racial discrimination in any form and in any degree has no justifiable part whatever in our democratic way of life.”7United States Courts. The Power of Fiery Dissents – Korematsu v. U.S. The absence of any comparable exclusion applied to Americans of German or Italian ancestry, Murphy wrote, could not be squared with the majority’s claim that race played no role.
Justice Jackson and the Loaded Weapon
Robert Jackson worried less about the immediate case and more about what the majority’s reasoning would do to American law over time. A military order, he wrote, “is not apt to last longer than the military emergency.” But once a court validates that order as constitutional, “the principle then lies about like a loaded weapon ready for the hand of any authority that can bring forward a plausible claim of an urgent need. Every repetition imbeds that principle more deeply in our law and thinking and expands it to new purposes.”1Cornell Law Institute. Korematsu v. United States Jackson accepted that military commanders sometimes act in ways that would be unconstitutional in peacetime. His objection was to the judiciary blessing those actions with constitutional approval and thereby making them permanent.
Justice Roberts on Contradictory Orders
Owen Roberts focused on the practical trap the military had built. One order directed Japanese Americans to leave the exclusion zone. Another required them to report to assembly centers where they would be held. Complying with one meant violating the other. Roberts described the case as “convicting a citizen as a punishment for not submitting to imprisonment in a concentration camp, based on his ancestry, and solely because of his ancestry, without evidence or inquiry concerning his loyalty.”7United States Courts. The Power of Fiery Dissents – Korematsu v. U.S.
Suppressed Evidence and the 1983 Vacatur
The decision rested on a factual record the government knew was false. In 1981, a Justice Department memo surfaced in the National Archives showing that government attorneys had suppressed and altered evidence in the wartime Japanese American cases.
The suppressed material mattered. The Ringle Report, prepared by an Office of Naval Intelligence officer, had concluded that the vast majority of Japanese Americans posed no security threat and that any risks could be handled through individual investigations.8The White House Archives. Confession of Error – The Solicitor Generals Mistakes During the Japanese-American Internment Cases Both the FBI and the Federal Communications Commission had refuted General DeWitt’s claims about Japanese Americans conducting illicit shore-to-ship radio signaling. The principal drafter of the government’s Korematsu brief had written internally that DeWitt’s claims were “intentional falsehoods.” None of that reached the Supreme Court.
Korematsu’s legal team filed a petition for a writ of coram nobis in January 1983, a rare procedural tool used to correct convictions tainted by fundamental error.9Justia. Korematsu v. United States On November 10, 1983, federal judge Marilyn Hall Patel vacated Korematsu’s conviction in the same San Francisco courthouse where he had first been convicted.5United States Courts. Facts and Case Summary – Korematsu v. U.S. The ruling cleared his criminal record. It did not overturn the Supreme Court precedent.
The 1988 Apology and Redress Payments
Congress addressed the underlying wrong through the Civil Liberties Act of 1988, signed by President Ronald Reagan on August 10 that year. The law described the incarceration as “a grave injustice” driven by “racial prejudice, wartime hysteria, and a failure of political leadership” rather than legitimate security concerns, and issued a formal national apology.10GovInfo. Public Law 100-383 – Civil Liberties Act of 1988
The act authorized a $20,000 payment to each surviving citizen or legal resident who had been incarcerated. A total of 82,219 people received redress. The first checks went out in October 1990 with a formal apology signed by President George H.W. Bush.
Formal Repudiation in Trump v. Hawaii
For decades after Korematsu’s conviction was vacated, the underlying precedent was widely treated as discredited but never formally overruled. That changed in 2018. In Trump v. Hawaii, which involved a presidential travel restriction affecting several predominantly Muslim countries, dissenting justices invoked Korematsu as a warning. Chief Justice John Roberts, writing for the majority, used the reference to address the precedent head-on.
“Korematsu was gravely wrong the day it was decided, has been overruled in the court of history, and—to be clear—’has no place in law under the Constitution,'” Roberts wrote, quoting Jackson’s 1944 dissent. The Court described forced relocation of American citizens to concentration camps solely on the basis of race as “objectively unlawful and outside the scope of Presidential authority.”11Cornell Law Institute. Trump v. Hawaii
The repudiation was unambiguous. It also arrived in a decision upholding the travel restriction that critics viewed as targeting people based on religion. Whether the loaded weapon Jackson warned about has been unloaded or pointed elsewhere is a question that continues to occupy constitutional scholars.