More than 40,000 illegal alien criminals from 79 different countries are housed in federal prisons – costing taxpayers millions every year.
The International Prison Transfer program should help to alleviate the problem as it permits willing criminals to transfer back to their country’s prison system. That could be at least a partial solution, but the problem is that many countries simply refused to accept the transfers – and there are no enforcement measures within the treaty.
See Page 2:

That’s just too bad! They belong to them, not us!
Put them on a plane over Mexico, throw them out at 10000 feet with a parachute. It they open the chutes fine, if not, oh well.
HOW ARE THEY GOING TO STOP US, WE COULD JUST BRING THEM TO THE BOARDER AND MAKE THEM CROSS IT AND START WALKING, IT WOULD BE THEIR PROBLEM FROM THERE
Cut off all aid.
Stick them in Gitmo
I agree stop all immigration…..and any aid we are sending.
They get them whether they like it or not. Not our people it is their people.
If they won’t take them back the nice way then push them back over. If their caught back in the US shoot
Too bad…they have to!!!!!! They didn’t ask to come in. We don’t have to ask to send them back!!!!!
A people that no one wants is useless to humanity, so drop them into the mid-Atlantic and let them swim to their country of choice