“NBC Nightly News” anchor Brian Williams told The Hill that he wrote Sen. Barack Obama (D-Ill.) and Rep. Harold Ford Jr. (D-Tenn.) letters of apology last week after he confused the two men at the State of the Union address. During NBC’s broadcast, Williams noticed Obama on the House floor and identified him to the viewing audience. Unfortunately, it was actually Ford. “I made a silly and honest mistake, and knowing both men I knew instantly what I had done,” a contrite and gracious Williams said in a phone call. “I obviously should have corrected it, but the proper time...