Okay, this may be a stupid question, but I live 2000 miles from the border, so humor me.
Is some sort of fence or wall impractical? Too ugly? Too expensive? I guess electrified is inhumane, huh? I assume someone has presented this before.
A real fence, perhaps with razor wire at the top, would be fine with me, as opposed to that joke of a fence that's currently down where the Minutemen patrol.