Biden sworn in to second term

Sunday, Jan. 20, 2013: Vice President Biden with wife Jill Biden after taking the oath of office from Supreme Court Justice Sotomayor at the Naval Observatory, in Wash., D.C. (AP)

Vice President Joe Biden has been sworn in to a second term.

The 70-year-old Biden took the oath of office from Supreme Court Justice Sonia Sotamayor during a private ceremony Sunday at the U.S. Naval Observatory, the vice president's residence.

Biden and President Barack Obama will take the oath of office again on Monday during a public ceremony at the Capitol.