In general, they were not. However, immediately following the attack on the US at Pearl Harbor, they were seen as being the enemies of the US.
The attack on Pear Harbour happened because the Japanese thought that the Americans was planning on attacking the Japanese.
Many Japanese Americans were segregated into private communities after the attack. This mostly occurred on the west coast since it was closer to japan. The government forced these Japanese Americans into camps where they could monitor them due to the paranoia after the attack.
The Japanese Army was happy with the various attacks on the British, Dutch & Americans (including the Pearl Harbor attack). The Japanese Army was the main force behind the idea of going to war with Britain & the US.
most Japanese Americans were treated badly by Americans there were mass movements of them to camps to prevent espionage
They flew in and bombed them
jail
Japanese-Americans living on the US west coast were sent to internment camps. Those living elsewhere in the 48-states and in Hawaii were free to work and move about but were generally under suspicion and were often discriminated against by others.
They do.
It cannot be described.
The government's reasoning behind isolating the Japanese-Americans was because the United States felt that they were not trust worthy after the bombing of Pearl Harbor, and that the Japanese-American's might try to attack the Americans.
America declared war on Japan.
The December 7, 1941, attack by the Japanese upon Pearl Harbor was a great surprise for primarily one reason: the Americans expected a Japanese attack to happen much farther west or south in the Pacific region. General hostilities had long been expected, but no one foresaw that the Japanese would dare to venture so far eastwards in order to start a war. The strict secrecy in which the attack was wrapped by the Japanese was yet another key factor.