U.S. President Barack Obama arrives to meet with the House Republican Conference on Capitol Hill in Washington D.C., capital of the United States, March 13, 2013. (Xinhua/Zhang Jun)

U.S. President Barack Obama smiles as he leaves after meeting with the House Republican Conference on Capitol Hill in Washington D.C., capital of the United States, March 13, 2013. (Xinhua/Zhang Jun)

U.S. President Barack Obama smiles as he leaves after meeting with the House Republican Conference on Capitol Hill in Washington D.C., capital of the United States, March 13, 2013. (Xinhua/Zhang Jun)

U.S. President Barack Obama leaves after meeting with the House Republican Conference on Capitol Hill in Washington D.C., capital of the United States, March 13, 2013. (Xinhua/Zhang Jun)

U.S. President Barack Obama arrives to meet with the House Republican Conference on Capitol Hill in Washington D.C., capital of the United States, March 13, 2013. (Xinhua/Zhang Jun)

U.S. President Barack Obama arrives to meet with the House Republican Conference on Capitol Hill in Washington D.C., capital of the United States, March 13, 2013. (Xinhua/Zhang Jun)

U.S. President Barack Obama leaves after meeting with the House Republican Conference on Capitol Hill in Washington D.C., capital of the United States, March 13, 2013. (Xinhua/Zhang Jun)

U.S. President Barack Obama speaks to reporters after meeting with the House Republican Conference on Capitol Hill in Washington D.C., capital of the United States, March 13, 2013. (Xinhua/Zhang Jun)

U.S. Speaker of the House, Ohio Republican John Boehner gestures as he speaks to reporters after a closed-door meeting with U.S. President Barack Obama on Capitol Hill in Washington D.C., capital of the United States, March 13, 2013. (Xinhua/Zhang Jun)

U.S. Speaker of the House, Ohio Republican John Boehner reacts as he speaks to reporters after a closed-door meeting with U.S. President Barack Obama on Capitol Hill in Washington D.C., capital of the United States, March 13, 2013. (Xinhua/Zhang Jun)

U.S. Speaker of the House, Ohio Republican John Boehner arrives for a closed-door meeting with U.S. President Barack Obama on Capitol Hill in Washington D.C., capital of the United States, March 13, 2013. (Xinhua/Zhang Jun)