Since some countries are refusing to accept these criminal aliens, how about we make any treaties, trade agreements and foreign aid contingent upon them taking them back. Refusing to do so would make any other agreements null and void. Or we could just execute them and be done with it.
"Or we could just execute them and be done with it."
Well, I might no go that far for all of them. But we should certainly increase substantially all penalties for people who commit crime while here illegally.
Or we could hold them indefinitely. Anything would work and anything would be better than releasing them because that just encourages others who know that they will rewarded for their efforts.