President Obama, Vice President Joe Biden and members of his National Security team receive an update on the mission against Osama bin Laden in the Situation Room of the White House. A classified document seen in this photograph has been obscured. Pete Souza/White House hide caption

itoggle caption Pete Souza/White House

Republican presidential candidate Newt Gingrich greets local residents after speaking at the Willow Ridge Golf Course on Dec. 15 in Fort Dodge, Iowa. Charlie Neibergall/AP hide caption

itoggle caption Charlie Neibergall/AP

On this April 7, 2009, visit to Iraq, President Obama greets U.S. troops at Camp Victory in Baghdad. On Dec. 2, 2011, the base was handed over to the Iraqi government. All U.S. soldiers are to be gone from Iraq by year's end. Charles Dharapak/Associated Press hide caption

itoggle caption Charles Dharapak/Associated Press

White House press secretary Jay Carney speaks Monday during his daily press briefing, as a clock counting down the expiration of the payroll tax cut benefit looms in the background. Alex Wong/Getty Images hide caption

itoggle caption Alex Wong/Getty Images

Ornaments made to honor loved ones decorate the Gold Star Families Tree. Jim Watson/AFP/Getty Images hide caption

itoggle caption Jim Watson/AFP/Getty Images