FILE - In this Jan. 21, 2013, photo, Vice President Joe Biden reacts with his wife, Jill, as they walk down Pennsylvania Avenue en route to the White House, Monday, Jan. 21, 2013, in Washington, during the Inaugural Parade during the 57th Presidential Inauguration parade after the ceremonial swearing-in of President Barack Obama. Biden in 2016? The inauguration is barely over but the vice president already is dropping plenty of hints that he might have another political act. Biden packed his schedule with events and receptions attended by party stalwarts throughout the long weekend of inauguration festivities, stoking speculation he may be laying the groundwork to carry the torch from Obama.  (AP Photo/Gerald Herbert)