Despite the actions on 9/11/01 by illegal, and legal, aliens the borders, especially the southern one, is still wide open and available to be crossed by any person willing to walk a ways.
The legal authorities could, at least, attempt to monitor legal aliens.
The illegal aliens coming across the southern borders cannot be monitored at all.
We may not be able to close the borders entirely but we could, and should, make it a lot harder and more dangerous.
We may not be able to close the borders entirely but we could, and should, make it a lot harder and more dangerousWell, since we are in the process of building aid stations and day labor centers for illegals here in the desert, I don't see that happening anytime soon.