https://www.theverge.com/2018/4/30/17303086/bill-gates-trump-white-house-science-advisor

Trump still hasn’t appointed a science adviser — but he did offer the job to Bill Gates, who said it was “not a good use of my time.”

At a meeting between the president and Microsoft founder last month, Gates suggested to Trump that he actually appoint someone to lead the White House Office of Science and Technology Policy. At this point, Gates told STAT, Trump asked Gates if he himself wanted the job. Gates did not.