But as one poster has pointed out, Mexico does.
If you try to cross into Mexico's southern border, they will shoot you. Period.
Shit dawg, man. They'll shoot you if you cross their NORTHERN border illegally.
As I've been saying, America should stop all trade with Mexico, until the Mexican government does its job of stopping its people from invading America.
The Mexican government is much more efficient in such matters, and could do it cheaply.
So, there should be a trade embargo on Mexico until it stops its citizens from tresspassing onto American property.
How Mexico would accomplish this, is none of my business.