Korematsu v. United States (1944): The Japanese American Internment Case

Case at a Glance

Quick Summary

Korematsu v. United States (1944) upheld the World War II exclusion of Japanese Americans from the West Coast under Executive Order 9066. The Supreme Court ruled 6-3 that the exclusion order was constitutional as a wartime military necessity. Widely condemned then and now, the decision was formally repudiated by the Supreme Court in Trump v. Hawaii (2018).

Background of Korematsu v. United States

After Japan attacked Pearl Harbor on December 7, 1941, fear and racial hostility toward Japanese Americans spiked along the West Coast. President Franklin D. Roosevelt signed Executive Order 9066 on February 19, 1942. The order authorized the military to designate areas from which any or all persons could be excluded.

Under that authority, General John L. DeWitt issued a series of orders. Curfews came first. Then forced removal. Then confinement in inland camps run by the newly created War Relocation Authority. Roughly 120,000 people of Japanese ancestry, most of them U.S. citizens, were removed from their homes and detained. Camps included Manzanar, Tule Lake, and Topaz.

The Supreme Court had already upheld the curfew in Hirabayashi v. United States (1943). The question of the exclusion order itself came to the Court in Korematsu.

Who Was Fred Korematsu?

Fred Toyosaburo Korematsu was born in Oakland, California, in 1919. He was a U.S. citizen by birth. When Civilian Exclusion Order No. 34 required him to report to an assembly center in May 1942, he refused. He was working as a welder and was engaged to be married. He briefly tried to alter his appearance to avoid detection. He was arrested in San Leandro, California, on May 30, 1942.

The American Civil Liberties Union took his case. He challenged the constitutionality of the exclusion order under the Fifth Amendment's Due Process Clause. He was not challenging the entire internment program at that stage, but the specific order that criminalized his presence in his own community.

Procedural History

Korematsu was convicted in the U.S. District Court for the Northern District of California for violating the exclusion order. He was placed on probation for five years and sent to the Tanforan Assembly Center and later to the Topaz internment camp in Utah. The Ninth Circuit affirmed his conviction. The Supreme Court granted certiorari and heard argument on October 11 and 12, 1944.

Facts of the Case

Civilian Exclusion Order No. 34 required all persons of Japanese ancestry to report to designated assembly centers by a set date. Korematsu, a citizen with no ties to Japan and no evidence of disloyalty, refused to comply. He was arrested and prosecuted under a 1942 federal statute that made violation of a military exclusion order a crime.

At trial, Korematsu argued the exclusion order singled out Japanese Americans by race. He said it violated his constitutional rights to due process and equal protection. The government argued the order was justified by military necessity and by the danger of espionage and sabotage on the West Coast.

Legal Issue

The legal question was whether the wartime exclusion of Japanese Americans from the West Coast, based on ancestry, violated the Fifth Amendment. The Court had to decide if military necessity could justify a race-based order.

Holding

The Supreme Court upheld Korematsu's conviction and ruled the exclusion order constitutional. The Court found that pressing public necessity may justify restrictions on the civil rights of a single racial group. It emphasized the case was about exclusion, not detention, and pointed to the companion case Ex parte Endo, decided the same day, which held that a concededly loyal citizen could not be held in a relocation camp.

Vote

The vote was 6-3. Justice Hugo Black wrote the majority opinion, joined by Chief Justice Harlan Fiske Stone and Justices Stanley Reed, William O. Douglas, and Wiley Rutledge. Justice Felix Frankfurter concurred. Justices Owen Roberts, Frank Murphy, and Robert H. Jackson filed separate, powerful dissents.

Majority Opinion by Justice Black

Justice Hugo Black wrote the opinion of the Court. He acknowledged that legal restrictions targeting a single racial group are 'immediately suspect' and must be subject to 'the most rigid scrutiny.' This language is often cited as the origin of what later became known as strict scrutiny in Equal Protection cases.

Black then applied that scrutiny very loosely. He accepted the government's claim that military authorities in 1942 had grounds to fear disloyalty and sabotage among Japanese Americans on the West Coast. He held that Congress and the executive, acting together in wartime, had made a judgment the Court would not second-guess.

Black insisted the case was about exclusion, not internment. He said the Court was not deciding whether Korematsu could be held in a camp after he complied with the exclusion order. That question, he said, was answered elsewhere.

Concurrence by Justice Frankfurter

Justice Felix Frankfurter concurred separately. He emphasized deference to the war powers of Congress and the president. He argued that in wartime the Constitution grants broad authority to act on military judgments, and courts should not substitute their view for that of the military.

Dissenting Opinions

Justice Roberts

Justice Owen Roberts wrote a short but firm dissent. He described the order as convicting a citizen for being in the state of California, his home, based on ancestry alone. He called it 'a clear violation of Constitutional rights.'

Justice Murphy

Justice Frank Murphy wrote perhaps the most famous dissent. He said the exclusion order 'goes over the very brink of constitutional power and falls into the ugly abyss of racism.' Murphy attacked the military's factual claims and noted the absence of any actual evidence of disloyalty. He warned that judicial deference to sweeping race-based measures set a dangerous precedent.

Justice Jackson

Justice Robert H. Jackson dissented separately. He argued the Court had no way to test the truth of the military's assertions and should not have upheld a criminal conviction on such thin evidence. His most quoted warning: once the Court upholds a race-based order, that ruling 'lies about like a loaded weapon' ready to be used again.

Court's Reasoning Step by Step

• Step 1: The Court identified racial classifications as immediately suspect and requiring rigid scrutiny.
• Step 2: It accepted the government's assertion of military necessity on the West Coast in 1942.
• Step 3: It deferred to combined congressional and executive war-power judgments.
• Step 4: It separated the exclusion order from the question of long-term detention.
• Step 5: It affirmed Korematsu's conviction under the exclusion order.

Rule of Law

The rule announced in Korematsu was that race-based classifications by the government are subject to the most rigid scrutiny but can survive that scrutiny in cases of pressing public necessity such as wartime security. That principle survives; the Court's application of it in Korematsu itself does not.

Constitutional Principles Established

• Racial classifications by the government trigger the strictest judicial review.
• Wartime war-power claims can lead courts to defer to executive judgment.
• Even loyal citizens may lose liberties under sweeping military orders if courts do not check them.
• Companion decision Ex parte Endo held loyal citizens could not be indefinitely detained.
• The dissents, especially Justice Jackson's, warned about precedent-based dangers.

Timeline

Why Korematsu Matters

Korematsu matters as both a legal precedent and a cautionary tale. Legally, it introduced language that grew into the strict scrutiny doctrine used today in Equal Protection cases. Morally, it stands as one of the Supreme Court's most heavily criticized decisions. Legal scholars and later Justices have described it as a failure of judicial courage in the face of wartime fear.

How Korematsu Was Repudiated

In 1983, a federal district court granted Fred Korematsu a writ of coram nobis after government documents revealed that officials had suppressed evidence contradicting the claim of military necessity. His conviction was vacated. In 1988, Congress and President Reagan formally acknowledged the injustice through the Civil Liberties Act, offering an apology and $20,000 in reparations to each surviving internee.

In 2018, Chief Justice John Roberts, writing for the majority in Trump v. Hawaii, stated 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.'

Long-Term Impact

Korematsu is now taught as the anti-canon, part of a small group of decisions studied for what courts must not do. It stands beside Dred Scott v. Sandford (1857) and Plessy v. Ferguson (1896) as a warning about the risks of judicial deference to prejudice.

At the same time, the case introduced the language of rigid scrutiny for racial classifications. That doctrinal seed later flowered in Brown v. Board of Education, Loving v. Virginia, and modern Equal Protection cases. The framework Korematsu articulated has been used, ironically, to invalidate the very kind of race-based government action it upheld.

Modern Relevance

Korematsu is invoked in modern debates about national security, immigration, and civil liberties. It is cited whenever courts consider deferring to executive claims of security necessity. Trump v. Hawaii both distinguished Korematsu and formally condemned it. The case continues to shape how courts, scholars, and the public think about the balance between security and civil rights.

Frequently Asked Questions

What was Korematsu v. United States about?

Korematsu v. United States was about the constitutionality of removing Japanese Americans from the West Coast during World War II. Fred Korematsu, a U.S. citizen, refused to comply with Civilian Exclusion Order No. 34. He was convicted and appealed. The Supreme Court ruled 6 to 3 that the exclusion order was constitutional as a wartime military necessity. The decision is now one of the most widely criticized in Supreme Court history.

Who won Korematsu v. United States?

The United States won. On December 18, 1944, the Supreme Court affirmed Fred Korematsu's conviction by 6 to 3. Justice Hugo Black wrote the majority opinion upholding the exclusion order under wartime powers. Korematsu did not gain a legal victory until decades later. In 1983, a federal court granted him a writ of coram nobis and vacated the conviction. Congress apologized and provided reparations in 1988.

What did the Supreme Court rule in Korematsu?

The Supreme Court ruled the exclusion order applied to Fred Korematsu was constitutional. The majority held that racial classifications by the government are 'immediately suspect' and receive 'the most rigid scrutiny,' but concluded the government had met that burden by invoking wartime military necessity. The Court took pains to say it was addressing only exclusion, not indefinite detention, which was decided in the companion case Ex parte Endo the same day.

Why is Korematsu v. United States controversial?

Korematsu is controversial because it upheld a race-based order that removed U.S. citizens from their homes during World War II. Later evidence showed the government suppressed information that contradicted the military necessity claim. Roughly 120,000 people were affected, most of them citizens with no evidence of disloyalty. The decision has been condemned by legal scholars, later Supreme Court opinions, Congress, and multiple U.S. presidents.

Has Korematsu v. United States been overturned?

Korematsu has been formally repudiated but never technically overruled through a case with the same facts. In Trump v. Hawaii (2018), Chief Justice John Roberts wrote that Korematsu 'was gravely wrong the day it was decided' and 'has no place in law under the Constitution.' That statement, along with Fred Korematsu's 1983 coram nobis relief and the Civil Liberties Act of 1988, put the decision out of practical force even though a full same-fact reversal never occurred.

What was the dissent in Korematsu?

Three Justices dissented. Justice Owen Roberts said Korematsu was punished for being in his own home based on ancestry. Justice Frank Murphy wrote that the order fell 'into the ugly abyss of racism' and pointed to the lack of real evidence of disloyalty. Justice Robert H. Jackson warned the ruling would remain like 'a loaded weapon' available to future courts. Together the dissents form one of the most powerful set of protest opinions in Supreme Court history.

Who was Fred Korematsu?

Fred Toyosaburo Korematsu was a Japanese American welder born in Oakland, California, in 1919. He was a U.S. citizen by birth. In 1942 he refused to comply with the military exclusion order and was arrested. He became the named plaintiff in one of the most infamous Supreme Court cases in American history. In 1998, President Bill Clinton awarded him the Presidential Medal of Freedom. He died in 2005 at age 86, and his birthday is now honored as a state day in California.

What was Executive Order 9066?

Executive Order 9066 was signed by President Franklin D. Roosevelt on February 19, 1942. It authorized the Secretary of War and military commanders to designate 'military areas' from which any or all persons could be excluded. Although the order did not name any group, it was used almost exclusively against people of Japanese ancestry on the West Coast. It provided the legal foundation for the curfew, exclusion, and internment programs upheld in Hirabayashi and Korematsu.

How was Fred Korematsu's conviction vacated?

In 1983, attorneys led by Peter Irons and Dale Minami filed a petition for a writ of coram nobis in the U.S. District Court for the Northern District of California. They presented newly discovered documents showing government lawyers had suppressed evidence contradicting the military necessity claim before the Supreme Court. Judge Marilyn Hall Patel granted the petition and vacated Korematsu's conviction. The ruling did not overturn the Supreme Court's 1944 decision, but it cleared his personal record.

What is the modern significance of Korematsu?

Korematsu is studied today as a warning about judicial deference during times of national fear. It also introduced language that grew into modern strict scrutiny for racial classifications, which has been used to strike down discriminatory laws. In Trump v. Hawaii (2018), the Supreme Court formally repudiated Korematsu while addressing a modern executive order. The case continues to shape debates about civil liberties, executive power, and equal protection under the Constitution.

Key Takeaways

• Korematsu v. United States was decided on December 18, 1944, by a 6-3 vote.
• The Court upheld the wartime exclusion of Japanese Americans from the West Coast.
• Justice Hugo Black wrote the majority; Justices Roberts, Murphy, and Jackson dissented.
• Fred Korematsu's conviction was vacated in 1983 through a writ of coram nobis.
• Congress apologized and paid reparations under the Civil Liberties Act of 1988.
• Chief Justice Roberts formally repudiated the decision in Trump v. Hawaii (2018).