1. I keep telling people that. Hell, I even pull Air Force missile officers out of their silos, and decommission every ship in the fleet, and I still don't get enough manpower to seal the Mexican border--but I get a s**tload of people leaving the service at the end of their terms. (Oh, that's right; we can always activate stop-loss!)
2. OK...let's assume that we have a massive draft, and every physically, mentally, and morally qualified individual is on the Mexican border to stop the terrorists and illegal aliens.
WTF do we do when the terrorists fly into Toronto, sponge off Canada's welfare system for a few years, become Canadian citizens, and then cross the Canada-US border?
Don't forget the white civil defense helmets.