Massive boycotts to ensue on any businesses who hire them?.
we can’t identify which aliens are legal and illegal. We can’t even identify which are aliens and which are not.
Assimilation has been under assault for decades in this country. That’s one of the reasons we have such huge cultural problems, we aren’t really a country anymore, but a series of intertwined warring cultures that increasingly care less and less about the whole to which they do not conform.
This sustained demographic cultural diversification(AKA multiculturalism) alone will inevitably tear this country apart by way of cultural balkinization leading to evermore reduced capacity to function as a whole.
The Condition of this country will grow worse as we are more focused on each-other than the world around us.