I don’t have a definite answer, but it’s not by country of birth. We’ve had too many ugliness in history stemming from that type of grouping. Because if it’s guilty by association (and not even association of one’s choice), then how is this different from the Japanese internment of WW 2?
Edit: also, is there any evidence that banning people of a certain birth place is actually effective? We already do background checks, and if those don’t screen out the risks, why would an additional blanket ban help?
Edit: also, is there any evidence that banning people of a certain birth place is actually effective? We already do background checks, and if those don’t screen out the risks, why would an additional blanket ban help?