I like Ike’s solution: It was called operation “Wetback”. Basically enforce the laws, and make sure to take them to the southern part of their country where it is not easy to get back in just an hour or so.
It was so effective, that the Government didn’t have to deport them all, because so many decided to just go back on their own (self deportation).
Yea, that was the “Romney plan”...of course he wasn’t serious, but it would work. Take away the goodies, they’ll go home. Mexico’s economy has been doing well, lots of jobs down there, and many will go home with some very marketable skills.