From a militarily strategic standpoint, should the nation's capital be moved further inland, nearer to the Colorado/Wyoming border?

Washington DC is currently vulnerable to a submarine attack or air attack from carriers in the Atlantic Ocean. Ground troops could easily invade after a conventional first strike, let alone a nuclear strike, with tanks, artillery, and ground troops. Further inland, the Capital would be protected from an invasion by 1800 miles of terrain and the Mississippi River on the east, and the Rocky Mountains on the west.