President Barack Obama is reflected in a mirror as he talks with Chief of Staff Denis McDonough prior to participating in the commencement ceremony at Morehouse College in Atlanta, Ga., May 19, 2013. A painting of the President stands in the foreground. (Official White House Photo by Pete Souza)

President Barack Obama participates in a literacy lesson with children while visiting a pre-kindergarten classroom at Moravia Elementary School in Baltimore, Md., May 17, 2013. (Official White House Photo by Pete Souza)

President Barack Obama and Prime Minister Recep Tayyip Erdoğan of Turkey participate in a working dinner in the Red Room of the White House, May 16, 2013. (Official White House Photo by Pete Souza)

President Barack Obama greets audience members during the National Peace Officers Memorial Service, an annual ceremony honoring law enforcement who were killed in the line of duty in the previous year, at the U.S. Capitol in Washington, D.C. May 15, 2013. (Official White House Photo by Pete Souza)

President Barack Obama gestures during a meeting in the Oval Office, May 14, 2013. (Official White House Photo by Pete Souza)

President Barack Obama waves to Prime Minister David Cameron of the United Kingdom as his car departs the North Portico of the White House, May 13, 2013. (Official White House Photo by Pete Souza)

President Barack Obama recognizes Natoma Canfield, right, during a statement on the Affordable Care Act in the East Room of the White House, May 10, 2013. (Official White House Photo by Pete Souza)

First Lady Michelle Obama, Dr. Jill Biden, and Prince Harry of Wales help military children create Mothers Day cards and other crafts in the State Dining Room of the White House, May 9, 2013. The children presented the gifts to their moms during the Joining Forces Military Mother's Day Tea in the East Room. (Official White House Photo by Lawrence Jackson)

President Barack Obama talks with, from left, Chief of Staff Denis McDonough, Gene Sperling, National Economic Council Director, and Miguel Rodriguez, Director of Legislative Affairs, in the Oval Office, May 8, 2013. (Official White House Photo by Pete Souza)

President Barack Obama and President Park Geun-hye of the Republic of Korea walk on the Colonnade of the White House before a working lunch in the Cabinet Room, May 7, 2013. (Official White House Photo by Pete Souza)