What I actually think it could be --- from observing every time a corrupt Mexican official brings up the "guest worker amnesty" plan they not so subtly bring up "our national security" --- as if the two are tied somehow. We open the borders to all Mexicans and those borders become somehow more secure. It doesn't make sense except that they must be threatening that they can just as easily work a deal with Al Queda if we don't give them what they want. Extortion.
Remember, Mexico voted against the UN resolution, didn't they?
There are a lot of Mexicans and Mexican-Americans that will tell you that California, New Mexico, Arizona and Texas are still rightfully Mexican property---I think those people are stirring up a lot of this---that is prolly why the danger along the border is getting worse---
I guess they just don't worry that the "Imperialist America" is gonna swoop down and "occupy" them, like we are supposed to have done in Iraq