"Suspicious" German-Americans and Italian-Americans were put under surveilance. But that is no wise the same as jailing everyone on the West Coast (except Hawaii itself) if they had at least one Japanese grandparent. Friends of my grandmother (who was brought over from Germany at age 2) were watched in Baltimore.
But that was all. Unless they got caught actually DOING anything.
Billybob
I imagine their abuse and rejection varied a lot by locality.