Since he has been designated a legal immigrant, that might make him eligible for the death penalty and Mexico can’t do a thing about it.
I would give him over to the Indian tribe whose members he killed, for justice. Let’s call it a “reparations payment”.
Now let’s see who on the sick Left defends this POS.
Know your enemies and then take them on.
If he’s a resident alien, he’s still eligible for assistance form his country’s embassy, and (most likely) Mexico will throw a stink up about the death penalty.
If it had been Mexico, of course, they would have just shot him and saved everyone the trial and trouble.
I like it.