President Barack Obama, center and Beau Biden, Attorney of Deleware, right, watch as his father Joe Biden is sworn in at the ceremonial swearing-in at the U.S. Capitol during the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. (AP Photo/Pablo Martinez Monsivais)

Associated Press
President Barack Obama, center and Beau Biden, Attorney of Deleware, right, watch as his father Joe Biden is sworn in at the ceremonial swearing-in at the U.S. Capitol during the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. (AP Photo/Pablo Martinez Monsivais)
President Barack Obama, center and Beau Biden, Attorney of Deleware, right, watch as his father Joe Biden is sworn in at the ceremonial swearing-in at the U.S. Capitol during the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. (AP Photo/Pablo Martinez Monsivais)
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