Gary Cohn resigned as director of the White House National Economic Council on Tuesday.
Mr. Cohn, who reportedly left over disagreement on new import tariffs, said in a White House statement: "It has been an honor to serve my country and enact pro-growth economic policies to benefit the American people, in particular the passage of historic tax reform."
Mr. Cohn was named assistant to the president for economic policy and director of the National Economic Council in December 2016 before Donald Trump took office. At the time, he was president and chief operating officer of Goldman Sachs Group.
Mr. Trump tweeted Tuesday night that he "will be making a decision soon on the appointment of new chief economic adviser. Many people wanting the job — will choose wisely!"