US President Donald Trump’s top economic adviser Gary Cohn is resigning, the White House has said.
It is the latest in a series of high-profile departures from President Trump’s team.
There has been speculation that Mr Cohn, a supporter of free trade, was angered by Mr Trump’s plans to impose tariffs on aluminium and steel imports.
In a statement released by the White House, Mr Cohn said it had been “an honour to serve my country”.
The 57-year-old former president of the Goldman Sachs bank helped Mr Trump push through his sweeping tax reforms late last year.
However, the two were not believed to be close.
In August 2017, Mr Cohn criticised Mr Trump over his reaction to a far-right rally in Charlottesville, Virginia, saying the administration “can and must do better”. He was reported to have drafted a resignation letter after the event.
“It has been an honour 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 said in his statement.
“I am grateful to the president for giving me this opportunity and wish him and the administration great success in the future.”
In a statement, Mr Trump described his outgoing economics adviser as “a rare talent”.
“Gary… did a superb job in driving our agenda, helping to deliver historic tax cuts and reforms and unleashing the American economy once again,” he said .
“He is a rare talent and I thank him for his dedicated service to the American people.”
Mr Trump later tweeted that he would pick Mr Cohn’s replacement “soon”.
“Many people wanting the job – will choose wisely!” he added.
Possible candidates mooted by US media include White House adviser Peter Navarro and Larry Kudlow, a conservative commentator and 2016 campaign adviser.