U.S. President Barack Obama, right, shakes hands with U.S. President-elect Donald Trump during a news conference in the Oval Office of the White House in Washington, D.C., U.S., on Thursday, Nov. 10, 2016. Obama on Thursday met face-to-face with Trump, who spent years questioning the eligibility of the first black U.S. president and now will succeed him. Photographer: Pete Marovich/Bloomberg via Getty Images