Similar to the Red Scare in WWI, many Americans feared Japanese Americans were a threat to American safety. 110,000 Japanese-Americans were forced into these camps because the US feared that they might act as saboteurs for Japan in case of invasion. The camps deprived the Japanese-Americans of basic rights, and the internees lost hundreds of millions of dollars in property. In the Supreme Court ruling in Korematsu v. U.S. (1944), the Supreme Court upheld the constitutionality of the concentration camps.