Obama, Biden take oath of office for second term

Jan. 20, 2013: President Barack Obama is officially sworn-in by Chief Justice John Roberts in the Blue Room of the White House during the 57th Presidential Inauguration in Washington. Next to Obama are first lady Michelle Obama, holding the Robinson Family Bible, and daughters Malia and Sasha. (AP)

Jan. 20, 2013: President Barack Obama is officially sworn-in by Chief Justice John Roberts in the Blue Room of the White House during the 57th Presidential Inauguration in Washington, as first lady Michelle Obama, holds the Robinson Family Bible. (AP)

Jan. 20, 2013: Vice President Joe Biden, left, takes the oath of office from Supreme Court Justice Sonia Sotomayor, right, as his wife Jill Biden holds the family bible and other family members look on at the U.S. Naval Observatory in Washington. (AP)

Jan. 20, 2013: Vice President Joe Biden, with his wife Jill Biden, celebrate after taking the oath of office from Supreme Court Justice Sonia Sotomayor surrounded by family during an official ceremony at the Naval Observatory, in Washington. Family members from left: Noami Biden, Finnegan Biden, Kathleen Biden, Hunter Biden, Ashley Biden, Howard Krein, Beau Biden. (AP)

Jan. 20, 2013: President Barack Obama and Vice President Joe Biden, accompanied by Maj. Gen. Michael S. Linnington, Commander of the U.S. Army Military District of Washington, arrive to place a wreath at the Tomb of the Unknowns at Arlington National Cemetery in Arlington, Va. (AP)

Jan. 20, 2013: President Barack Obama and Vice President Joe Biden, accompanied by Maj. Gen. Michael S. Linnington, Commander of the U.S. Army Military District of Washington, listen to Taps after placing a wreath at the Tomb of the Unknowns at Arlington National Cemetery in Arlington, Va., Sunday. (AP)

Jan. 19, 2013: First lady Michelle Obama speaks during the Kids' Inaugural "Our Children. Our Future" event in Washington.