The Korematsu v. United States case justified the internment of Japanese-American citizens during World War II.
After the bombing of Pearl Harbor by the Japanese military, the United States officially entered World War II. Along with this, President Franklin D. Roosevelt issued Executive Order 9066. This resulted in the forced removal of thousands of Japanese-American citizens from their homes and into internment camps. Korematsu was one of these individuals. He filed charges against the government, stating that being forced into an internment camp violated his constitutional rights. However, the Supreme Court ruled in favor of the government.