If Criminal illegal Aliens, who complete their US sentences, are not taken back by their country of citizenship...I have a plan that works...
Execute them
Not only Criminal Illegal Aliens will run out of this country quicker than a rat in slum....all other Illegal Aliens would beat it
Execute them
Better yet, put them on the first freighter back to their country of origin. Let the ship's captain deal with the problem. I would also put the protesting immigration lawyer on the boat too.