Hard times call for hard measures.
We had to protect out vulnerable defense industries on the West Coast without tipping Japan off to the fact that we had broken many of their codes.
Our access to Japanese codes was paramount and exclusion from the West Coast was reckoned to be the only polict that would not tip off the japanese.
The British knew that the Germans were going to mount a massive bombing raid against Covenrty, but they didn't dare tip the townspeople off because to do so would have revealed that they had broken the German cosed.
As a result, Coventry was bombed into rubble with a terrible loss of life.
I sympathize with those forcibly removed from the West Coast, but a lot of Americans made even bigger sacrifices during WW II.
Fair enough, friend.