One thing that nutjob Ron Paul rightly pointed out is; if the border is sealed, it goes both ways. May keep them out, keeps us in if the communists decide to make Gulag USA.
If we actually enforced immigration law, make their first illegal entry a felony and deport them and forever banish them, if they return, we execute them...just like Mexico has in their own immigration law.
Sauce for the goose.
There is no reason we should tolerate this nonsense from Mexico and the rest of the Marxist hellholes in Central America. They send us the dregs of their societies not the best.