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U.S. President Barack Obama presents the Medal of Freedom to U.S. Vice President Joe Biden 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 Obama presents the Medal of Freedom to U.S. Vice President Joe Biden 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