That way we can send all illegals and their kin packing on a sea cruise, at the same time!
The old "slow boat to China" route works.
Put one or 2 of them in one of the many surplus shipping containers and dump them off on an island. Fill the shipping container with just enough food and water. Come by 3-4 times a year. If there are any father-sons rotting in separate jails let them get reacquainted with each other(no distractions).