The authorities will be forced by events to close the borders very soon .... the Muslims are just playing vile games, and Bush needs to step up and close the borders. In a few weeks this 'sniper hunt' might turn into a hunt for mall bombers, or the worse nightmare imaginable.
I expect the bombings to start between now and Christmas. This snipe hunt is really draining resources in the DC area, perhaps something bigger is in the works and this is a distraction that's coming to a neighborhood near you soon.