How were japanese-americans treated during wwii answer. com?

The government restricted the civil liberties of Japanese Americans.  In February, 1942, President Roosevelt issued Executive Order 9066, which allowed the Secretary of War to designate certain areas as military zones.  FDR's executive order set the stage for the relocation of Japanese-ancestry persons to internment camps.  By June of 1942, over 100,000 Japanese Americans were sent to such internment camps.  Essentially, they were removed from their homes and their jobs and treated with suspicion as detainees of the government.