** FILE ** President Obama walks off stage after delivering a speech at an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. (AP Photo/Evan Vucci)

Photo by: Evan Vucci

** FILE ** President Obama walks off stage after delivering a speech at an interfaith vigil for the victims of the Sandy Hook Elementary School shooting on Sunday, Dec. 16, 2012, at Newtown High School in Newtown, Conn. (AP Photo/Evan Vucci)