US President Barack Obama delivers a keynote address ahead of the G-8 summit at Waterfront Hall in Belfast, Northern Ireland on Monday, June 17, 2013. (AP Photo/ Paul Faith, Pool)
President Barack Obama shares a humorous moment with a group of doctors from around the country in the Oval Office, Oct. 5, 2009, prior to a health insurance reform event at the White House.
(Official White House Photo by Pete Souza)
Peacemaker: "There is no war on coal," Energy Secretary Ernest Moniz said last week, contradicting others in the Obama administration who are pushing hard to limit carbon emissions. (Associated Press)
President Barack Obama waves to the media as he walks on the South Lawn of the White House in Washington after returning on Marine One from Camp David, Md., where he spent his birthday Sunday, Aug. 4, 2013. (AP Photo/Jacquelyn Martin)
President Barack Obama and Jay Leno joke backstage before taping "The Tonight Show with Jay Leno" in Burbank, Calif., Oct. 25, 2011. (Official White House Photo by Pete Souza)
President Barack Obama and New Jersey Governor Chris Christie, right, greet workers during a tour of the One World Trade Center site in New York, N.Y., June 14, 2012. (Official White House Photo by Pete Souza)
Tanzanian Ambassador Liberata Mulamula says the Obama administration has indicated that it is willing to put up money to train rangers to help end poaching and trafficking in her country but has not made any commitment to provide drones. (Andrew S. Geraci/The Washington Times)