The Korematsu v. United States (1944) case was a Supreme Court case that challenged the constitutionality of the ruling that saw U.S. citizens and residents of Japanese descent put into exclusion in internment camps during World War II.
The petitioner in the case had evaded internment and then fought to question the constitutionality of why a U.S. citizen of Japanese descent could be interred within the United States like a foreign national.
The ruling was on the side of the government, with a 6–3 finding that the law was constitutional.
This case related to Executive Order 9066, and in subsequent times, the ruling has been found to be faulty. The petitioner got the ruling overturned in 1983, and in 2011, the Secretary-General conceded that the ruling was flawed at the time because evidence had been withheld stating that there was no evidence that the Japanese American citizens had broken any law.