Kick them out. They can apply legally. Are a bleeding heart or what? That kind of thinking only empowers LIB lunatics .
A kid comes here as a two-year-old and is now 17-years-old. He is no more able to get around in the country where he was born than you are. Even if your really felt that way, to round up that kid and "send him back" is a political impossibility. Dream on if you think it will ever happen.