WASHINGTON -- Sen. John McCain, one of the strongest proponents in Congress of the U.S. military intervention in Libya, is heading to the rebel stronghold of Benghazi for a meeting with forces fighting to overthrow Moammar Gadhafi, an aide told The Associated Press.McCain was scheduled to arrive in Benghazi on Friday, said Brooke Buchanan, a spokeswoman for the senator.Read More... More on Libya