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:

Drop them off at the border a push them across
tough!!!
No problem round them up and drop their asses into syria
Just have fully ARMED U.S. MILITARY take them across the border, March there asses out of the cargo ships & DON’T LET THEM BACK IN, PERIOD!!!
Throw them over the fence
Concentration camp.
The only other choice is to execute them
Put them on a boat in the ocean and pull the plug.
It’s simple, airplane, parachute, short flight, big push, bye!!!’
Stupid Mexico!! What do you expect…when corrupt politicians take money from Drug Cartels!!!