(Tongue in cheek--but it'd be great if we did...)
We give them due process like this.
Upon arrest, the illegal has all personal property on them removed and they go to jail to await their "due process" hearing. At the hearing--it is a civil process after all, so they don't get a lawyer unless they have the cash to hire one on them-- they are hauled in front of the judge.
"State your full name" the judge says.
"I am Juan Jose Sanchez, your worship."
"So, Juan where are you from?"
"I am from Colombia, your honor."
"Got any proof of that Juan?"
"No, senior judge, I have no papers."
"Okay, Juan we need to find out where you're from. Bailiff, spin the wheel!"
The bailiff spins the wheel of deportation... Buuurrrrr, click, click, click...
The judge looks at the wheel. "We've determined you are from Azerbaijan. Officers, deport Juan here to Azerbaijan!"
We missed a great opportunity with Afghanistan. We should have deported ALL illegals there. We could have emptied our prisons of the worse of the worst that way too. Commute their sentence if they agree to deportation to Afghanistan and to give up US citizenship. Let them take their personal stuff and spend all their money before they go on whatever they want--including weapons. I think our 1% biker gangsters are more than a match for the Taliban. At least the bikers know what indoor plumbing is...