WASHINGTON - MARCH 25:  Ambassador Christopher Hill, Assistant Secretary of State for East Asian and Pacific Affairs, testifies before the Senate Foreign Relations Committee March 25, 2009 in Washington, DC. Nominated by President Barack Obama to become the U.S. ambassador to Iraq, Hill is facing opposition from Sen. Sam Brownback (R-KS) and a small group of Republican senators. Getty Images logo Getty Images 8 months ago

WASHINGTON - MARCH 25: Ambassador Christopher Hill, Assistant Secretary of State for East Asian and Pacific Affairs, testifies before the Senate Foreign Relations Committee March 25, 2009 in Washington, DC. Nominated by President Barack Obama to become the U.S. ambassador to Iraq, Hill is facing opposition from Sen. Sam Brownback (R-KS) and a small group of Republican senators.