I think the reality is that most (read: majority, however slight) people DON'T want this to happen. It is a net negative for society no matter how you shake it.
The people who DO want this, live in hyper-expensive gated communities and go to their tennis club brunch with representatives, aides, and advisors for public office. They all make the choice to do this, import these people, destroy your communities. WE don't get a say, at all. And if you try and take matters in to your own hands and dare to push back? "INSENSITIVE RACIST!!!!"
Cuz they don't care. They get the votes, they get the federal aid dollars, they get the right to use it as a stump topic ("I was key in providing aid to our suffering immigrants!").