President Barack Obama awards the 2010 Medal of Freedom to Warren Buffett during a ceremony in the East Room of the White House in Washington Tuesday, Feb. 15, 2011. (AP Photo/Charles Dharapak)

Photo by: Charles Dharapak

President Barack Obama awards the 2010 Medal of Freedom to Warren Buffett during a ceremony in the East Room of the White House in Washington Tuesday, Feb. 15, 2011. (AP Photo/Charles Dharapak)