While I don't want to be too hasty, I think this is becoming more and more of a necessity nowadays. If the Brits's commitment to fighting terrorism isn't reborn in the wake of these attacks then the U.S. is alone, aside from Israel and Japan, and likely Australia (Israel and Australia having moderate-severe problems of their own). We need to look at the borders again, if nothing else, and check for weaknesses.
check for weaknesses? there's only 4. one in the south, from CA to FL, and one in the north, from WA to ME, one in the east, from ME to FL, and one in the west, from WA to CA.