yet no germans or italians were mass interred.
the US ended up paying reparations for what FDR did.
Not mass internments but some were interned. And their internments were based on evidence that they might be a threat, and not just because they were German or Italian.
I think the focus on the nips was due to the fact that they had first dibs on US invasion, so they were more of a threat.
That’s not to say others weren’t.
I think it’s an analogous situation where we want a wall in the south, but not the north - the list of troubles to deal with is prioritized based on where most of the problems lie.