Trump will cut off all the freebies: medical, luxury hotels, debit cards, etc
After a wave of thefts don't get them what they want, many will leave on their own. Especially those in the Northeast come the first frost
Between Philly and NYC from what I've seen first-hand over the past couple years, the homeless Americans aren't giving up those doorways and subway grates to illegals without a fight
Trump will cleverly highlight the problem of the homeless in major cities and emphasize to all that there's nowhere else for the illegals to go (once all their benefits are cut off, which I am convinced he will do first thing) and there will be even more of a backlash against them than there is now. Many, but not all will go back where they came from. And good riddance!!!