Answer:
“At the same time, the FBI and the Federal Communications Commission conducted separate investigations of the Japanese living in America.” “Alarmed at the enemy’s swift advance through the Pacific, military officials suggested that Japan might try to invade the west coast of America and that maybe the Issei and the Nisei who lived there would aid the invasion.” “Although the charge of Japanese sabotage on Hawaii was totally false, newspaper writers and radio broadcasters began warning of the danger of Japanese sabotage on the west coast.” “Japanese books and magazines were burned because of a rumor that FBI agents had found such materials in the homes of Issei arrested on suspicion of sabotage."