This document summarizes the Korematsu vs. United States Supreme Court case. It discusses the Japanese immigration to the US in the late 19th/early 20th century and the growing anti-Japanese sentiment. After the Pearl Harbor attacks, President Roosevelt issued Executive Order 9066 allowing the internment of Japanese Americans. Fred Korematsu challenged his internment and his case reached the Supreme Court in 1944. The Court upheld the internment in a 6-3 decision, though Justice Murphy strongly dissented, calling it an legalization of racism. Korematsu's conviction was later overturned in 1983.