Sen. Lindsey Graham (R-S.C.) said Sunday that Congress should not interfere with U.S. operations in Libya. "Congress should sort of shut up and not empower [Libyan leader Muammar] Qadhafi," Graham said on NBC's "Meet the Press." Congressional critics of the Libya action have been floating the possibility of defunding military operations there, or invoking the War Powers Act to force an end to the military operation.