Korematsu v. United States — Japanese Internment & Repudiation

Korematsu v. United States, 323 U.S. 214 (1944), is one of the most reviled decisions in Supreme Court history — a ruling that upheld the forced military exclusion of approximately 120,000 Japanese Americans from the West Coast during World War II, based solely on their ancestry. Fred Korematsu, a U.S. citizen of Japanese descent living in San Leandro, California, defied Executive Order 9066 — President Franklin Roosevelt's 1942 order authorizing military commanders to designate "military areas" from which any person could be excluded — and was convicted of violating the military exclusion order. Justice Black's majority opinion held that racial classifications in wartime could survive constitutional scrutiny if they are justified by "pressing public necessity," articulating in the process the first clear statement that racial classifications are subject to strict scrutiny — "the most rigid" judicial examination. But having announced strict scrutiny, the Court then applied it so deferentially to the military's factual claims about Japanese American disloyalty that it upheld the exclusion order without serious examination of its premises. The decision is condemned today on two grounds: first, as a factual matter, the military's asserted justification (that Japanese Americans posed a unique security threat) was based on fabricated evidence and racial prejudice, not genuine intelligence — a fact the government concealed from the Court; second, as a constitutional matter, the suspension of constitutional rights based on race, even in wartime, cannot be squared with the equal protection principles the Fourteenth Amendment embodies. In Trump v. Hawaii (2018), Chief Justice Roberts formally repudiated Korematsu as "gravely wrong the day it was decided" — making the ruling's overruling official, even though it had never formally been followed as precedent in the subsequent seven decades.

Current Law (2026)

Legal Authority

• U.S. Const. amend. V — Due Process Clause; the equal protection principle the Court eventually developed from the Fifth Amendment's Due Process Clause applies to the federal government; Korematsu arose under this provision (the Fourteenth Amendment applies to states)
• U.S. Const. amend. XIV, § 1 — Equal Protection Clause: prohibits states from denying equal protection of the laws; the equal protection framework that condemns Korematsu runs through this amendment (via incorporation) and through Bolling v. Sharpe (1954), which extended equal protection to the federal government
• 50 U.S.C. § 4001 — Successor to the Emergency Detention Act of 1950 (repealed 1971); the Non-Detention Act: "No citizen shall be imprisoned or otherwise detained by the United States except pursuant to an Act of Congress" — enacted partly in response to the constitutional violations of the internment period
• Exec. Order No. 9066 (1942) — Authorized military commanders to designate areas from which persons could be excluded; the constitutional authority behind the Japanese American exclusion orders
• Korematsu v. United States, 323 U.S. 214 (1944) — Military exclusion of Japanese Americans upheld under strict-scrutiny-in-name; first clear statement that racial classifications require "the most rigid scrutiny"
• Hirabayashi v. United States, 320 U.S. 81 (1943) — Curfew order for Japanese Americans upheld; precursor to Korematsu; also vacated through coram nobis proceedings in 1987
• Trump v. Hawaii, 585 U.S. 667 (2018) — Travel ban from majority-Muslim countries upheld; Roberts majority opinion formally repudiated Korematsu as "gravely wrong the day it was decided"
• Coram nobis decisions — Korematsu v. United States, 584 F. Supp. 1406 (N.D. Cal. 1984): Korematsu's conviction vacated based on government suppression of evidence; Hirabayashi v. United States, 828 F.2d 591 (9th Cir. 1987): similar result

Key Mechanics

Korematsu v. United States (1944) upheld the World War II military exclusion order requiring Japanese Americans to leave their homes on the West Coast — including 120,000 people, two-thirds of whom were U.S. citizens. Fred Korematsu, an American-born citizen, defied the exclusion order and was convicted. The Supreme Court affirmed 6-3 in an opinion by Justice Black. The decision has two enduring — and contradictory — constitutional legacies. First, Korematsu was the first case in which the Supreme Court clearly announced that racial classifications must receive "the most rigid scrutiny" — what we now call strict scrutiny. The doctrine was stated clearly, then applied in a manner that upheld the most egregious racial classification in 20th-century constitutional history. Second, the factual basis for Korematsu was manufactured: government lawyers knew that the military's claims about Japanese American disloyalty were not supported by intelligence reports, but suppressed that evidence. In 1984, a federal court vacated Korematsu's conviction through a writ of error coram nobis on the basis of this governmental misconduct. In Trump v. Hawaii (2018), Chief Justice Roberts formally declared that Korematsu was "gravely wrong the day it was decided" — the first explicit repudiation of the case by the Court. The Civil Liberties Act of 1988 issued a formal U.S. government apology for the internment and authorized $20,000 reparations payments to surviving internees.

How It Works

Fred Korematsu and the Exclusion Orders

Fred Korematsu was a twenty-three-year-old welder living in San Leandro, California, when the Japanese attack on Pearl Harbor occurred on December 7, 1941. A U.S. citizen by birth, he had grown up in Alameda County and worked at a shipyard until anti-Japanese sentiment led to his dismissal. After Executive Order 9066 was issued in February 1942 and military authorities designated the West Coast a military zone from which persons of Japanese ancestry were to be excluded, Korematsu chose to stay — unwilling to leave his Italian American fiancée and hoping that his appearance (he had undergone eyelid surgery to appear less Japanese) would allow him to remain undetected.

He was arrested in May 1942, convicted of violating the exclusion order, and sentenced to five years' probation. He was then subjected to the exclusion order and sent to an assembly center and later a relocation center (the euphemisms used for what were essentially internment camps) in Utah. The ACLU took his case on appeal.

The mass exclusion and internment encompassed approximately 120,000 persons of Japanese ancestry — roughly two-thirds of whom were U.S. citizens by birth. Their property was confiscated or lost; their businesses were destroyed; they were held in hastily constructed camps in remote areas for up to three years. The program was justified by military authorities on the basis that Japanese Americans might serve as spies or saboteurs in the event of a Japanese attack on the West Coast — a justification the government's own internal intelligence assessments had largely contradicted.

Justice Black's Majority Opinion: Strict Scrutiny Without Rigor

Justice Black's majority opinion is remembered for two things: its announcement of a demanding standard for racial classifications, and its failure to apply that standard rigorously.

The strict scrutiny announcement: Black wrote that legal restrictions that curtail "the civil rights of a single racial group" are "immediately suspect" and subject to "the most rigid scrutiny." This was the clearest statement of what later scholarship would call strict scrutiny — a standard that would, in almost all subsequent cases, be applied to invalidate racial classifications. Black's language established the doctrine even as his application of it upheld the exclusion order.

The deference to military judgment: Having announced strict scrutiny, Black then applied it in a nearly maximally deferential way. The majority accepted the military's assertion that Japanese Americans posed a unique security threat without independently examining the evidence, without assessing whether less restrictive alternatives could have addressed legitimate security concerns, and without acknowledging the racial stereotyping inherent in treating all 120,000 Japanese Americans as potential saboteurs based on ancestry alone. The majority explicitly declined to examine whether the program was more extensive than military necessity required, treating military judgment in wartime as virtually unchallengeable.

Murphy's Dissent: Falling into the Ugly Abyss

Justice Murphy's dissent stands as the moral antidote to the majority. Murphy wrote that the military's exclusion order "goes over the very brink of constitutional power and falls into the ugly abyss of racism." He documented that the military's justification relied on stereotyping and racial prejudice rather than actual evidence of disloyalty — many Japanese Americans had demonstrated their loyalty through military service, and there was no credible evidence of a distinct security threat posed by Japanese Americans as a class.

Murphy rejected the majority's deference: strict scrutiny cannot be satisfied by deference to unexamined military assertions. The equal protection principle cannot be suspended in wartime simply by invoking national security without genuine evidentiary justification.

Justice Jackson's dissent took a different but also notable approach: he argued that the Court should not have reached the constitutional question — by upholding the exclusion order, the Court was converting what might have been an executive overstep into a constitutional precedent that could be used to justify similar programs in the future. Better, Jackson argued, to avoid placing the Court's imprimatur on such a policy, even if immediate enforcement might continue.

The Suppressed Evidence: The Coram Nobis Cases

In 1983, a team of lawyers uncovered documents from the National Archives establishing that the government had systematically suppressed evidence when it presented the Korematsu case to the Supreme Court. The documents — including reports from the Office of Naval Intelligence and the Federal Bureau of Investigation — showed that government officials knew that the military's factual assertions about Japanese American disloyalty were false or unsubstantiated, and that officials had deliberately altered or withheld these reports from the Solicitor General's brief to the Court.

Fred Korematsu, then sixty-three years old, filed a petition for a writ of coram nobis in federal district court in San Francisco — an ancient common law writ that allows courts to correct judgments infected by fundamental legal error based on facts not available at the time of the original proceedings. Judge Marilyn Hall Patel granted the petition in 1984, vacating Korematsu's conviction. She called the exclusion order "based upon unsubstantiated facts, distorted justifications, and the failure to inform the courts." Gordon Hirabayashi's conviction was similarly vacated by the Ninth Circuit in 1987.

The coram nobis proceedings did not formally overrule Korematsu as Supreme Court precedent, but they demolished the factual foundation on which the Supreme Court decision had rested.

The Road to Formal Repudiation

Despite near-universal scholarly condemnation, the Supreme Court had not formally overruled Korematsu in the decades following the decision. The case was treated as a kind of constitutional bad example — courts declined to follow it, distinguished it, or criticized it, but no Supreme Court majority had explicitly said it was wrong.

In Trump v. Hawaii (2018), Chief Justice Roberts wrote the opinion upholding President Trump's proclamation restricting travel from several majority-Muslim countries. In the course of that opinion, he addressed the argument that Korematsu should be applied to the travel ban. Roberts rejected the comparison — the travel ban was a generally applicable, facially neutral restriction on entry, not a racial exclusion — but then went further: "The forcible relocation of U.S. citizens to concentration camps, solely and explicitly on the basis of race, is objectively unlawful and outside the scope of Presidential authority. . . . 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.'"

This is the formal Supreme Court repudiation that scholars had long argued was overdue. Notably, the repudiation came in an opinion written by the same Justice who, in the same opinion, upheld a travel ban that Justice Sotomayor's dissent argued replicated Korematsu's logic in a new form. The irony was not lost on critics.

Korematsu's Constitutional Contribution: The Strict Scrutiny Standard

Whatever the decision's moral failings, it made an important doctrinal contribution: it was the first clear statement that racial classifications demand the most rigorous judicial scrutiny. This principle — refined and applied consistently after Korematsu to invalidate virtually every racial classification the courts have reviewed — is the constitutional law of equal protection as it applies to race.

Loving v. Virginia (1967) applied strict scrutiny to strike down anti-miscegenation laws; Grutter v. Bollinger (2003) applied it to evaluate affirmative action; Students for Fair Admissions v. Harvard (2023) applied it to strike down race-conscious admissions. The entire architecture of modern racial equal protection doctrine rests on the standard Korematsu announced — even though Korematsu failed to apply that standard with the rigor it required.

How It Affects You

If you are a member of a group subjected to government action justified by national security: Korematsu's legacy is a cautionary principle: courts should not accept government national security justifications without genuine examination of their factual foundations. The coram nobis cases revealed that the government had withheld evidence from the Supreme Court; Murphy's dissent identified the racial stereotyping at the core of the exclusion program. If you are subject to a government program that restricts rights on the basis of group membership justified by security concerns, the formal requirements of strict scrutiny — compelling governmental interest and narrow tailoring — apply, and courts cannot satisfy those requirements through deference alone. The Trump v. Hawaii travel ban decision illustrates the ongoing tension: formal strict scrutiny repudiation of Korematsu, but significant deference to executive national security judgments in the same case.

If you are a civil liberties attorney challenging government classifications: The strict scrutiny standard that Korematsu announced is your primary constitutional tool for challenging race-based or national-origin-based government action. Modern strict scrutiny, properly applied, requires the government to demonstrate: (1) a compelling governmental interest, and (2) that the classification is narrowly tailored to serve that interest. The interest must be documented with genuine evidence, not merely asserted; narrow tailoring must be demonstrated through consideration of less restrictive alternatives. Korematsu's failure to demand this showing is the template for what courts must not do; the subsequent decades of strict scrutiny doctrine demonstrate what they must.

If you are a national security policymaker or legal advisor: Korematsu's repudiation carries a direct practical lesson: national security justifications for racially targeted programs will not survive constitutional scrutiny, regardless of how genuine the underlying security concern. The suppressed evidence in Korematsu's coram nobis proceedings established that government officials had known the factual predicate was weak and had withheld that information. Beyond the constitutional problem, such programs involve significant accountability and reputational costs — Congress eventually enacted the Civil Liberties Act of 1988, providing reparations to surviving internees. Security concerns can justify some restrictions on activity, but not race-based exclusions; the legal and historical record supports no other conclusion.

If you are a Japanese American or a descendant of internment survivors: The legal story of Korematsu's repudiation is intertwined with the personal and community story of the Japanese American Citizens League's decades-long campaign to achieve legal recognition of the internment's injustice. Fred Korematsu continued to speak about the internment experience until his death in 2005, receiving the Presidential Medal of Freedom in 1998. Congress enacted the Civil Liberties Act of 1988, providing $20,000 in reparations and a formal apology to surviving internees. The formal legal repudiation came later, in Trump v. Hawaii (2018). January 30 is Fred Korematsu Day in California and several other states. The legal and political vindication, while incomplete, represents one of the longer arcs of constitutional justice in American history.

State Variations

Korematsu involved federal executive power and the Fifth Amendment's due process protection; it did not directly involve state constitutional law. But several state-level dimensions are relevant:

State reparations and recognition: California, Oregon, Washington, and other states with large Japanese American populations have enacted various forms of recognition, memorial, and reparation for the internment. California created a Day of Remembrance; several states have designated January 30 as Fred Korematsu Day. These state actions reflect the same moral repudiation that the legal system eventually formalized.

State equal protection law: State equal protection clauses — under state constitutions — generally provide at least as strong protection against racial classifications as the federal standard, and several states have provisions that are interpreted more strictly. Any state program that subjects a group to adverse action based on race or national origin faces strict scrutiny under both federal and state constitutional law.

State cooperation with federal internment: California and other West Coast states cooperated with the federal internment program — providing law enforcement support and in some cases enacting their own exclusion measures. The internment's moral condemnation extends to the state actors who facilitated it, not only to the federal executive and judicial branches.

Pending Legislation

No pending legislation directly addresses Korematsu — the decision is repudiated, Korematsu's conviction was vacated, and the Civil Liberties Act of 1988 provided reparations. However, several ongoing issues invoke Korematsu's legacy:

• Birthright citizenship: Challenges to birthright citizenship for children of undocumented immigrants invoke the same Fourteenth Amendment Citizenship Clause that was meant to prevent governments from creating categories of inferior or non-citizenship — the same constitutional framework that Korematsu violated. Courts have enjoined executive orders limiting birthright citizenship; Korematsu's history provides the cautionary context.
• National security and civil liberties oversight: Post-9/11 surveillance programs, immigration enforcement, and national security detention policies regularly generate Korematsu comparisons. Proposals for enhanced congressional oversight of national security programs — and for strengthening the Non-Detention Act (50 U.S.C. § 4001) — reflect the ongoing effort to prevent a recurrence.

Recent Developments

• 1983-1987 — Coram nobis proceedings: Korematsu's and Hirabayashi's convictions vacated by federal courts after discovery that the government had suppressed evidence; the factual foundation for the Supreme Court's deference to military judgment was shown to be fraudulent.
• 1988 — Civil Liberties Act: Congress enacted reparations and a formal apology for Japanese American internment survivors; approximately $1.6 billion in $20,000 payments was eventually distributed.
• 2018 — Trump v. Hawaii: Chief Justice Roberts formally repudiated Korematsu — "gravely wrong the day it was decided" — while upholding the Muslim-majority-country travel ban; Justice Sotomayor's dissent argued the majority's reasoning replicated Korematsu's logic.
• 2020 — Fred Korematsu's centennial: The centennial of Fred Korematsu's birth prompted renewed attention to the internment history and its legal repudiation; several states added Korematsu Day to their calendars.
• 2022-2026 — Korematsu in the travel ban and immigration enforcement contexts: Challenges to immigration enforcement actions targeting specific national-origin groups regularly invoke Korematsu's cautionary precedent; courts applying strict scrutiny to race and national origin classifications do so against the backdrop of Korematsu's history as the paradigm case of what strict scrutiny must prevent.