"Disinformation" by Richard Miniter is an excellent book, with one huge exception: one of his "myths" is that terrorists might come across the US/Mexico border. That's no myth, and this proves it.
I'm not quite sure this "proves it" but I know one thing, if I were a terrorist, I know how I'd try to get in.
Apparently this is nothing more than a figament of the Congresswoman's imagination. It has been a favorite myth of the Bushwhackers for months now and been repeatedly shown to be untrue.