FILE - This Dec. 16, 2012 file photo shows President Barack Obama pausing as he speaks during an interfaith vigil for the victims of the Sandy Hook Elementary School shooting, at Newtown High School in Newtown, Conn. Four years after he was the fifth-youngest president to take the oath of office, Barack Obama now is 51, his hair more gray, his face more lined. The changes aren't all physical: As he enters Term Two, he is sounding more confident, vowing a harder line on negotiations, relying more on trusted allies, promising less, expressing more cynicism about the grip of partisanship on Washington. And perhaps most important, he seems more convinced of a need to keep the public with him, coming full circle to his people-driven 2008 campaign. (AP Photo/Evan Vucci, File)

Associated Press
FILE - This Dec. 16, 2012 file photo shows President Barack Obama pausing as he speaks during an interfaith vigil for the victims of the Sandy Hook Elementary School shooting, at Newtown High School in Newtown, Conn.  Four years after he was the fifth-youngest president to take the oath of office, Barack Obama now is 51, his hair more gray, his face more lined. The changes aren't all physical: As he enters Term Two, he is sounding more confident, vowing a harder line on negotiations, relying more on trusted allies, promising less, expressing more cynicism about the grip of partisanship on Washington. And perhaps most important, he seems more convinced of a need to keep the public with him, coming full circle to his people-driven 2008 campaign.  (AP Photo/Evan Vucci, File)
FILE - This Dec. 16, 2012 file photo shows President Barack Obama pausing as he speaks during an interfaith vigil for the victims of the Sandy Hook Elementary School shooting, at Newtown High School in Newtown, Conn. Four years after he was the fifth-youngest president to take the oath of office, Barack Obama now is 51, his hair more gray, his face more lined. The changes aren't all physical: As he enters Term Two, he is sounding more confident, vowing a harder line on negotiations, relying more on trusted allies, promising less, expressing more cynicism about the grip of partisanship on Washington. And perhaps most important, he seems more convinced of a need to keep the public with him, coming full circle to his people-driven 2008 campaign. (AP Photo/Evan Vucci, File)