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U.S. President Barack Obam, left, laughs with U.S. Vice President Joe Biden after presenting the Medal of Freedom during an event at the White House in Washington, D.C., U.S., on Thursday, Jan. 12, 2017. Obama awarded Biden with the highest civilian honor, commemorating an "extraordinary man with an extraordinary career in public service." Photographer: Olivier Douliery/Pool via Bloomberg

U.S. President Barack Obam, left, laughs with U.S. Vice President Joe Biden after presenting the Medal of Freedom during an event at the White House in Washington, D.C., U.S., on Thursday, Jan. 12, 2017. Obama awarded Biden with the highest civilian honor, commemorating an "extraordinary man with an extraordinary career in public service." Photographer: Olivier Douliery/Pool via Bloomberg