Republican Lawmakers Grill Potential Secretary Of State Nominee

Republican Lawmakers Grill Potential Secretary Of State Nominee
Sen. John McCain, R-Ariz. speaks at the 41st Washington Conference on the Americas, Wednesday, May 11, 2011, at the State Department in Washington.

UN Ambassador Susan Rice found herself in a lions den on Capitol Hill Tuesday as she meet with Republican leaders to explain her comments shortly after the attack on the US consulate in Benghazi, Libya. Republican Senator John McCain was among those who was not satisfied with her explanation. ABC's Sam Donaldson says Rice's Republican critics are threatening to block her nomination if President Obama chooses her to be the next Secretary of State.