No, they wouldn't kick you out.
They'd arrest you, beat the hell out of you, then rob you, then put you in jail. Then they'd beat the hell out of you again and try to get your family to pay for your release. Eventually, they'd probably beat the hell out of you again. And, when they got bored or needed the room, they might release you in the middle of nowhere with no money or possessions.
And that's part of the illegal alien experience.
All of them don't come from Mexico, but from the rest of Central and South America. And when they are caught traveling through Mexico, that's what happens. I've met guys that have been through it.