Gary Cohn to Resign as Trump's Economic Adviser Cohn said he will resign on Tuesday as President Trump's top economic adviser. White House officials didn't attribute his departure to any particular factor. Cohn, who is the head of the National Economic Council, said last week he would leave if Trump decided to impose tariffs on steel imports. "Gary has been my chief economic adviser and did a superb job in driving our agenda, helping to deliver historic tax cuts and reforms and unleashing the American economy once again." Trump told The New York Times