President Obama waves as he walks across the South Lawn of the White House in Washington, Monday, Aug. 16, 2010, as he travels to Wisconsin and California. (AP Photo/Charles Dharapak)

Photo by: Charles Dharapak

President Obama waves as he walks across the South Lawn of the White House in Washington, Monday, Aug. 16, 2010, as he travels to Wisconsin and California. (AP Photo/Charles Dharapak)