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. By a 6-3 vote, the Court ruled that a wartime exclusion order applied to Fred Korematsu, a U.S.-born citizen, did not violate the Constitution. The decision remained binding precedent for more than seventy years until the Supreme Court formally repudiated it in 2018, saying it was “gravely wrong the day it was decided.”
Who Fred Korematsu Was and What He Did
Fred Korematsu was a 23-year-old shipyard welder born in Oakland, California. On May 3, 1942, General John L. DeWitt, commanding the Western Defense Command, issued Civilian Exclusion Order No. 34, which required all people of Japanese ancestry to leave the San Leandro area by May 9. Korematsu refused. He was arrested on May 30, 1942, and charged with violating the exclusion order.
The order Korematsu defied came out of a broader legal machinery. President Franklin D. Roosevelt signed Executive Order 9066 on February 19, 1942, authorizing the Secretary of War and military commanders to designate “military areas” and exclude “any or all persons” from them.1National Archives. Executive Order 9066: Resulting in Japanese-American Incarceration The order did not name Japanese Americans, but military commanders applied it almost exclusively to people of Japanese ancestry on the West Coast. Congress reinforced it a month later with Public Law 503, which made violating a restriction issued under the executive order a federal misdemeanor punishable by up to a $5,000 fine, up to one year in prison, or both.2U.S. Government Publishing Office. S. 2250 – Korematsu-Takai Civil Liberties Protection Act of 2017 No one accused Korematsu of espionage or disloyalty. He was prosecuted for being present in a military zone as a person of Japanese ancestry.
What the Supreme Court Decided
Justice Hugo Black wrote the majority opinion. He acknowledged that “all legal restrictions which curtail the civil rights of a single racial group are immediately suspect” and must face “the most rigid scrutiny.”3Legal Information Institute. Korematsu v. United States, 323 U.S. 214 That language helped establish what courts today call strict scrutiny, the most demanding standard of judicial review, requiring the government to show a compelling interest achieved through narrowly tailored means.
The Court then held that the exclusion satisfied that test. The majority accepted the military’s argument that the threat of Japanese invasion, the risk of espionage and sabotage, and the impracticality of quickly separating loyal from disloyal residents made mass removal a matter of military necessity rather than racial prejudice.4Justia U.S. Supreme Court Center. Korematsu v. United States, 323 U.S. 214 The government had also argued that Congress ratified the military’s authority through Public Law 503 and that courts should defer to military judgment in wartime.
The majority took a deliberately narrow view of what was before it. The opinion addressed only the crime of remaining in a military zone in violation of the exclusion order. It sidestepped the broader question of whether the government could constitutionally detain citizens in internment camps at all. The Court leaned on its earlier decision in Hirabayashi v. United States (1943), which had unanimously upheld a race-based curfew on people of Japanese ancestry.5Justia U.S. Supreme Court Center. Hirabayashi v. United States, 320 U.S. 81
The Three Dissents
Justice Frank Murphy called the exclusion order a “legalization of racism” and wrote that it “falls into the ugly abyss of racism.”4Justia U.S. Supreme Court Center. Korematsu v. United States, 323 U.S. 214 Murphy attacked the factual basis for the military’s claims, arguing they rested on “misinformation, half-truths and insinuations” produced by people motivated by racial and economic prejudice. Independent experts, he wrote, had discredited the government’s assertions about the danger posed by Japanese Americans, and a military judgment built on racial stereotypes deserved none of the deference the majority gave it.
Justice Robert Jackson focused on the precedent the Court was creating. His warning became one of the most quoted lines in Supreme Court history: the ruling was “a loaded weapon ready for the hand of any authority that can bring forward a plausible claim of an urgent need.”3Legal Information Institute. Korematsu v. United States, 323 U.S. 214 A military order expires with the emergency that prompted it, Jackson argued, but a Supreme Court opinion endorsing racial discrimination becomes permanent law that any future government can pick up and use.
Justice Owen Roberts identified the trap in Korematsu’s actual situation. Korematsu faced two contradictory military orders: one barred him from leaving the area, and another ordered him to report to an assembly center that would send him to a detention camp. Roberts said this was not really a case about violating an exclusion order. It was a case about punishing a citizen for refusing to submit to imprisonment without trial, based solely on his ancestry.3Legal Information Institute. Korematsu v. United States, 323 U.S. 214
How Korematsu’s Conviction Was Vacated
In January 1983, a legal team led by attorney Peter Irons filed a petition for a writ of error coram nobis on Korematsu’s behalf in federal district court in San Francisco. Coram nobis is a rare remedy used to correct a fundamental error in a criminal case after the defendant has already served the sentence. The petition rested on evidence unearthed through Freedom of Information Act requests: internal government documents showing that federal agencies had deliberately withheld and distorted evidence when arguing the case before the Supreme Court in 1944.6Justia. Korematsu v. United States, 584 F.Supp. 1406
Judge Marilyn Hall Patel found that the government had “knowingly withheld information from the courts” on the central question of military necessity. Intelligence reports from the FBI, the Federal Communications Commission, and the Navy had found no evidence of organized espionage or sabotage by Japanese Americans, directly contradicting General DeWitt’s claims. Multiple Justice Department officials had internally flagged what they called “wilful historical inaccuracies and intentional falsehoods” in DeWitt’s final report, but the government presented the courts with a selective record that omitted all of it.6Justia. Korematsu v. United States, 584 F.Supp. 1406
Judge Patel granted the writ and vacated Korematsu’s conviction in November 1983. The ruling cleared his criminal record but did not overrule the Supreme Court’s 1944 precedent. Only the Supreme Court itself could do that. What the coram nobis proceeding did was establish a public record of the government misconduct that had produced the original decision.
Congressional Apology and Redress
Congress had created the Commission on Wartime Relocation and Internment of Civilians in 1980 to investigate the internment program. The Commission’s 1983 report concluded that Executive Order 9066 was “not justified by military necessity” and identified the real causes as “race prejudice, war hysteria, and a failure of political leadership.”
Congress then passed the Civil Liberties Act of 1988. The law declared that a “grave injustice” had been done to citizens and permanent residents of Japanese ancestry and formally apologized on behalf of the nation.7Congress.gov. H.R.442 – Civil Liberties Act of 1987 It directed the Attorney General to locate each surviving person who had been relocated or interned and pay them $20,000 in restitution.8Office of the Law Revision Counsel. 50 USC Chapter 52, Subchapter I President Reagan signed the law and called the internment a “grave wrong” carried out “without trial, without jury” and “based solely on race.”
Is Korematsu Still Good Law?
No. For decades after the coram nobis proceedings, Korematsu remained technically valid Supreme Court precedent even as it was widely condemned as one of the Court’s worst decisions. That changed in 2018 in Trump v. Hawaii, where the Court upheld a presidential proclamation restricting travel from several countries. Chief Justice John Roberts, writing for the majority, addressed Korematsu directly even though no party had raised it. He wrote that “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.”9Supreme Court of the United States. Trump v. Hawaii, 585 U.S. ___ (2018)
That statement closed the book on Korematsu as precedent. Legal scholars have debated how much weight the repudiation carries, since the Trump v. Hawaii majority used Korematsu as a cautionary example while upholding a different form of executive restriction on a specific population, a tension the dissenting justices in that case pointed out. What is settled is that no court can now cite Korematsu as good law to justify race-based exclusion orders.