Next to improved security, the most important threat in this whole mess is the 'path to citizenship' in proposed 'guest worker' programs being pushed by many politicians. Bad idea - 12 million new citizens plus their dependents is enough to change the voting demographic in this country for generations to come.
Americans need to think on that long & hard.
My point is, any action to deal with those already here, from amnesty to forced deportation to anything inbetween, will fail as long as the borders are wide open. So it's pointless to even try and pass such legislation now.
Secure the border, continue cracking down on employers who hire illegals (i.e., prove the current enforcement uptick is for real and not just for show), and maybe in two years we can start talking about what to do with those already here and whether a guest worker program makes sense. I don't think it does, but I am willing to debate and compromise to some extent as long as we stop the flood first.