Current White House Chief of Staff Jack Lew, who President Barack Obama has nominated to be the new treasury secretary, arrives on the West Front of the Capitol in Washington, Monday, Jan. 21, 2013, for President Barack Obama's ceremonial swearing-in ceremony during the 57th Presidential Inauguration. (AP Photo/Win McNamee, Pool
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.