When a person is caught breaking into your home, telling you that he has a right to live there, and you have no say in the matter, HE WILL be arrested for breaking and entering, HE KNEW it was not his home. SO when he is sent to jail for breaking and entering, eating your food, using you home as his own, against your stated proclaimed will, Are you and the police separating him from his family or did he do that himself?
They are not UNDOCUMENTED IMMIGRANTS they are Trespassers, Invaders, Illegal Aliens and a host of other terms, but they are not UNDOCUMENTED Immigrants, that would imply that they have a RIGHT to be here and have simply not got to the front of the line to do it lawfully...