This interpretation makes the entire immigration system extremely arbitrary and capricious. It's almost as if Trump supporters just want to give non-citizens a hard time for no reason. The cruelty is the point.
Yeah, and the disincentives consist of giving non-citizens a hard time for no reason.
> so fewer people will do it.
You're not disagreeing with OP. You're just trying to whitewash all the xenophobia behind the motivation.