State Secretary Hillary Rodham Clinton, center, and former President Bill Clinton, greet guests at a luncheon after the ceremonial swearing-in of President Barack Obama and Vice President Joe Biden on Capitol Hill in Washington, Monday, Jan. 21, 2013. (AP Photo/Manuel Balce Ceneta)
Gallery: President Obama's second inauguration
Jan. 21, 2013 @ 02:45 PM
Declaring “our work begins today”, President Barack Obama vowed to “finished what we started” four years ago as hundreds of thousands of inauguration-goers gathered on the historic National Mall in anticipation of his oath-taking for a second term.