I suppose it really comes down to what “back of the line” means.
If it means they get to stay in this country and wait at the back the of the line until their turn to become a legal immigrant comes up, I say no dice.
If it means they have to leave this country and then get at the back of the line, okay.
But I got the feeling Christie meant the former (staying in this country)—although that could have just been my impression.
Christie is for amnesty. He supported the amnesty bill of 2007, and wants another bill like that to pass. Christie is not that conservative. He is similar to George W. Bush during his first term, where conservatives believed Bush was more conservative than he really was.