We passed a law in Arizona that you must PROVE that you are eligable to work in the USA. In the past 18 months, we have lost almost half of our illegal immigrants. If the whole country did this, they would self deport. Neither party has the balls to do it.
In the Carolinas if they don't have a job the young ones go home to live off their relatives like our kids would do here. Now if a guy is married with kids that might be a little different because they might be able to get government benefits. The young guys live with a bunch of their buddies. If they can't pay their way they are ousted from the nest pretty quick and they generally go home. With the drop in building and landscaping their ranks have really thinned out over the last coupe of years.