Let's anchor them offshore and convert them into prisons.
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.
Screw that, I figure we can comfortably - COMFORTABLY - set up 400 studio apartments on one. Park that off the coast of San Francisco, pay $150,000 per month for the charter - and charge out $1,200,000 per month for rent ($3000 per month for a studio apartment). Quick money!