Demographics for one thing. Red state governors are shipping illegals to blue shitholes as fast as they slither in. If they end up in a city with a predominantly black or brown population within a blue shithole state, whose jobs are at risk? If they end up in a municipality that is predominantly white, once again, whose jobs are at risk?
To be sure, this is probably not happening on a large scale...YET. But what happens when we stop feeding, sheltering, and giving them health care (on the taxpayer's dime, I might add)? What's probably going to happen is the ones who want to work are going to take any job they can get. And we end up another itinerant migrant culture in our cities.