President Barack Obama shakes hands with China's President Hu Jintao during a state arrival ceremony, Wednesday, Jan. 19, 2011, on the South Lawn of the White House in Washington. (AP Photo/Charles Dharapak)

Photo by: Charles Dharapak

President Barack Obama shakes hands with China's President Hu Jintao during a state arrival ceremony, Wednesday, Jan. 19, 2011, on the South Lawn of the White House in Washington. (AP Photo/Charles Dharapak)