Korematsu v. United States
The Supreme Court upheld the conviction of a Japanese American man for staying in his California home instead of complying with a World War II military order excluding all people of Japanese ancestry from the West Coast.
The Court said the exclusion was justified by wartime military necessity rather than racial hostility, a ruling that let the government's mass removal of Japanese Americans stand and that later generations would widely condemn as a grave failure to protect civil rights during wartime.
“Pressing public necessity may sometimes justify the existence of such restrictions; racial antagonism never can.”
The majority's statement that racial restrictions require the strictest justification, though it still upheld this one.
How it got here: A federal district court convicted Korematsu; the Ninth Circuit Court of Appeals affirmed; the Supreme Court granted review because of the case's constitutional importance.
The Case in Depth
What happened
Fred Korematsu, an American-born citizen of Japanese descent, continued living in San Leandro, California after the Army ordered all persons of Japanese ancestry to leave the West Coast during World War II. He was arrested and convicted for violating Civilian Exclusion Order No. 34, part of a broader military program following Pearl Harbor aimed at guarding against feared sabotage and espionage. No one questioned his personal loyalty to the United States.
The question before the Court
Could the government convict a Japanese American citizen for staying in his own West Coast home after the Army ordered everyone of Japanese ancestry to leave?
Why it matters
The decision allowed the forced removal of roughly 112,000 people, most of them American citizens, from their homes based solely on ancestry, without individual hearings on loyalty. It also announced that racial classifications by government demand the closest judicial scrutiny, a standard that later became central to constitutional civil-rights law even as this case's outcome was widely repudiated.
What changes now
This was a final merits decision affirming Korematsu's conviction, not a temporary order. The Court expressly left open the separate question of whether detention in assembly or relocation centers was lawful, noting that issue would be addressed in a companion case, Ex parte Endo, decided the same day. The ruling stood as controlling law for decades before being widely repudiated and later addressed by Congress and, eventually, by the Supreme Court itself in later cases.
What this does not decide
The Court said it was ruling only on the validity of the exclusion order requiring Korematsu to leave the area, not on the legality of detaining Japanese Americans in assembly or relocation centers, a separate question the dissents argued could not really be severed from the exclusion itself.
Concurrences and dissents
Concurrence — Justice Frankfurter
Justice Frankfurter agreed the exclusion order was constitutional, emphasizing that wartime military orders should be judged as part of the Constitution's own war powers rather than treated as inherently suspect. He argued courts should not second-guess reasonably expedient military judgments, comparing deference to military commanders to deference given to expert administrative agencies.
Dissent — Justice Roberts
Justice Roberts argued the case was not really about temporary exclusion but about punishing Korematsu for refusing to submit to imprisonment in what he called a concentration camp. He traced the sequence of military orders to show Korematsu faced contradictory commands that effectively trapped him into criminal liability unless he surrendered to detention, and would have reversed the conviction.
Dissent — Justice Murphy
Justice Murphy argued the exclusion order was an unconstitutional racial discrimination that fell far short of the requirement that any deprivation of rights be reasonably related to an immediate, imminent public danger. He extensively challenged the military's factual claims about disloyalty as resting on racial prejudice and unreliable generalizations rather than genuine military necessity, and called the ruling a 'legalization of racism.'
Dissent — Justice Jackson
“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.”Jackson's warning that upholding the exclusion order would create a dangerous, reusable precedent.
Justice Jackson objected that Korematsu was being punished for an act, being present in his own home state, that was only a crime because of his ancestry, violating the principle that guilt must be personal. He warned that upholding the order as constitutional would validate the racial-discrimination principle as a permanent, dangerous precedent, likening it to 'a loaded weapon' available for future misuse, and would have reversed the conviction.
How the Court got there
The legal reasoning, step by step
- The Court began by stating that any law restricting the rights of a single racial group is 'immediately suspect' and must be subjected to the most rigid scrutiny, though such restrictions are not automatically unconstitutional if backed by pressing public necessity rather than racial hostility.
- The Court treated this case as controlled by its recent decision upholding a nighttime curfew imposed only on Japanese Americans, reasoning that if curfew could be justified as protection against espionage and sabotage, a broader exclusion order resting on the same wartime findings could be as well.
- The Court deferred to the judgment of military authorities and Congress that an unknown number of disloyal individuals existed within the Japanese American population and could not quickly be identified and separated from the loyal majority, making group-wide exclusion appear militarily necessary rather than mere group punishment.
- The Court concluded that because exclusion, like curfew, had a close relationship to preventing espionage and sabotage in a war zone, and because the military and Congress had reasonable grounds for their assessment at the time, the wartime exclusion order did not exceed the government's war powers.
- The Court declined to rule on the legality of the assembly and relocation centers themselves, treating the duty to leave the area as a legally separate requirement from any later detention, since Korematsu had only been convicted of remaining in the area, not of refusing to report to a center.
Doctrinal impact
Cases affected by this decision
Reaffirms Hirabayashi v. United States (320 U.S. 81)
The Court relied on its earlier curfew ruling as the basis for upholding the broader exclusion order here.