White House

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President Obama and 2014 National Teacher of the Year finalists applaud Sean McComb, second from right, a high school English teacher from Maryland who helps push students toward college, as the 2014 National Teacher of the Year, Thursday, May 1, 2014, during an event in the East Room of the White House in Washington. (AP Photo/Susan Walsh)

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President Obama presents the 2014 National Teacher of the Year Sean McComb, a high school English teacher from Maryland who helps push students toward college, with his award, Thursday, May 1, 2014, during a ceremony to honor the 2014 National Teacher of the Year and finalists in the East Room of the White House in Washington. (AP Photo/Susan Walsh)

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President and Mrs. Clinton and their daughter Chelsea look over their Thanksgiving Day turkey Thursday, Nov. 23, 1995 in a kitchen of the presidential retreat Camp David, Md. (AP Photo/The White House, Sharon Farmer)

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In this photo released by the White House, U.S. President Ronald Reagan, left, and Vice President George Bush go horseback riding at Camp David, Md., July 1981. (AP Photo/White House, Michael Evans)

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This photo released by The White House shows President Bush talking to U.S. troops from Camp David, Md., Thanksgiving Day, Thursday, Nov. 22, 2007. The President phoned members of the Armed Forces, who are stationed overseas, to wish them a happy Thanksgiving and thank them for their service to the Nation. (AP Photo/ The White House, Eric Draper)

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In this Sept. 3, 2013, file photo Sen. Lindsey Graham, R-S.C., talks to a reporter following a speech in Goose Creek, S.C. (AP Photo/Bruce Smith, File)