The order set into motion the exclusion from certain areas, and the evacuation and mass incarceration of 120,000 persons of Japanese ancestry living on the West Coast, most of whom were U.S. citizens or legal permanent resident aliens.
These Japanese Americans, half of whom were children, were incarcerated for up to 4 years, without due process of law or any factual basis, in bleak, remote camps surrounded by barbed wire and armed guards.
They were forced to evacuate their homes and leave their jobs; in some cases family members were separated and put into different camps. President Roosevelt himself called the 10 facilities "concentration camps."
Some Japanese Americans died in the camps due to inadequate medical care and the emotional stresses they encountered. Several were killed by military guards posted for allegedly resisting orders.
At the time, Executive Order 9066 was justified as a "military necessity" to protect against domestic espionage and sabotage. However, it was later documented that "our government had in its possession proof that not one Japanese American, citizen or not, had engaged in espionage, not one had committed any act of sabotage." (Michi Weglyn, 1976).
Rather, the causes for this unprecedented action in American history, according to the Commission on Wartime Relocation and Internment of Civilians, "were motivated largely by racial prejudice, wartime hysteria, and a failure of political leadership."
Almost 50 years later, through the efforts of leaders and advocates of the Japanese American community, Congress passed the Civil Liberties Act of 1988. Popularly known as the Japanese American Redress Bill, this act acknowledged that "a grave injustice was done" and