With all the problems we have with the U.S./Mexico border, we need additional protection, but how? Fences don't seem to work. The border guards suck (I mean, when uniformed Mexican police can just hop over and grab U.S. citizens...), and we can't put enough troops on the border. How do we do it, then? Well, anybody who's ever been to a grocery store knows about those little plastic bars that divide orders, right. I've seen road lines, borders, lines drawn in the sand, and even police lines crossed without the person batting an eyelash. However, I have never seen, to this day, a single person EVER cross one of those plastic bars. It's like it's screaming, "Whatever crosses me DIES!" I say we line our borders with those things. Then American will be safe again...as long as the immigrants have been to a grocery store before.