Political And Business Visitors At Trump Tower During President-Elect's Transition To The White House [Getty Images]

U.S. President-elect Donald Trump, left, and musician Kanye West arrive in the lobby of Trump Tower in New York, U.S., on Tuesday, Dec. 13, 2016. Exxon Mobil Corp. Chief Executive Officer Rex Tillerson will be nominated as Trump's secretary of state, setting up a potential confirmation battle with U.S. lawmakers who have questioned the oilman's relationship with Russian President Vladimir Putin. Photographer: John Taggart/Bloomberg via Getty Images

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