Korematsu’s advocates Wayne M. Collins and Charles A Horsky used Writ of Habeas Corpus to challenge the legal basis of Korematsu’s imprisonment, its duration, and the conditions of arrest and confinement. As a result of this legal challenge, a court order requiring Korematsu’s presence at trial and valid reasoning for his imprisonment was granted to the agency currently holding him. Furthermore, Korematsu was brought to court he questioned the constitutionality of executive order 9066, arguing that his 5th amendment rights were violated. The petitioner noted the meticulous gathering and transferring of all Japanese-Americans, innocent or guilty, from their residences without due process of law, citing General DeWitt’s consecutive orders
