U.S. President Barack Obama (R) and Vice President Joe Biden attend the opening ceremony for the Fiscal Responsibility Summit at White House in Washington, capital of the United States, Feb. 23, 2009. [Zhang Yan/Xinhua] 

U.S. President Barack Obama (4th L) leaves after delivering remarks about the Fiscal Year 2010 budget with National Economic Council Chairman Lawrence Summers, Council of Economic Advisers Chairwoman Christina Romer, Vice President Joe Biden (1st-3rd L), Treasury Secretary Timothy Geithner (2nd R) and Office of Management and Budget Director Peter Orszag (1st R) in the Eisenhower Executive Office Building at White House in Washignton D.C., capital of the United States, February 26, 2009. [Zhang Yan/Xinhua]