Yes, almost all were American citizens, 99.9% were patriotic citizens who had their businesses, assets, etc. confiscated. This thread should die.
No, that's not quite the case.
There were many who were loyal to the Empire of Japan.
The problem was that we could not just arrest the spies and troublemakers without tipping Japan off that we had broken their diplomatic code.
Consequently, moved all Japanese from the West Coast and we didn't do anything with Japanese in other parts of the US unless they were aliens.
Incidently, we didn't intern the Japanese, we excluded thm from the West Coast.
Those with someplace to go inland could go there instead of to a camp if they were citizen.
I agree. Resident aliens are one thing but American citizens are quite another. Never should perfectly innocent American citizens ever be put in concentration camps without due process. I grew up with Japanese and I can tell you some stories that will make you cry. And yes I know how brutal they were, My dad fought them on Iwo Jima. I have absolutely Zero (no pun intended) sympathy for WW2 Japan and their warlords. They were treated much to kindly after their surrender. Many Japanese war criminals went unpunished and that's a crime in itself. Bur that's another story. I like Michelle Malkin and I agree with her on almost every issue, but she is dead wrong on this.