WASHINGTON (Reuters) - President Donald Trump's top economic adviser, Gary Cohn, resigned on Tuesday, a move that came after he lost a fight over Trump's plans for hefty steel and aluminum import tariffs.
The following is a partial list of officials who have been fired or have left the administration since Trump took office on Jan. 20, 2017, as well as people who were nominated by him for a position but did not take the job:
The White House communications director, one of Trump's longest-serving and most trusted aides, resigned on Feb 28. She was the fourth person to hold the post since Trump became president.
The White House staff secretary, a senior adviser in charge of much of the documentation that went to Donald Trump for his signature, resigned in early February following accusations of domestic abuse from two former wives.
The Consumer Financial Protection Bureau's first director resigned in November 2017. Trump designated White House Budget Director Mick Mulvaney as acting director, but Cordray named a deputy director as his replacement, triggering a political and legal battle.
Four days later, a federal court ruled in Trump's favour.
The Health and Human Services Secretary resigned under pressure from Trump in September 2017, in an uproar over Price's use of costly private charter planes for government business.
Trump's chief strategist, who had been a driving force behind the president's anti-globalisation and pro-nationalist agenda that helped propel him to election victory, was fired by Trump in mid-August 2017.
He had repeatedly clashed with more moderate factions in the White House.
The former chairman of the Republican National Committee was replaced by John Kelly as Trump's chief of staff in July 2017.
A confidant of the president said Trump had lost confidence in Priebus after major legislative items failed to be approved by Congress.
The White House communications director was fired by Trump in July 2017 after just 10 days on the job after profanity-laced comments to The New Yorker magazine were published.
The head of the US Office of Government Ethics, who clashed with Trump and his administration, stepped down in July 2017 before his five-year term was to end.
Senior White House assistant press secretary resigned in July 2017.
He resigned as White House press secretary in July 2017, ending a turbulent tenure after Trump named Scaramucci as White House communications director.
The Federal Bureau of Investigation director, who was leading a probe into possible collusion between the Trump 2016 presidential campaign and Russia to influence the election outcome, was fired by Trump in May 2017.
The Goldman Sachs Group Inc banker who was nominated by Trump as deputy Treasury secretary withdrew his name in May 2017.
The founder of Crossroads Media resigned as White House communications director in May 2017.
Trump's nominee for Army secretary withdrew his name from consideration in May 2017.
A co-owner of the Chicago Cubs baseball team and Trump's choice for deputy secretary of commerce, withdrew from consideration in April. Katie Walsh - deputy White House chief of staff, was transferred to the outside pro-Trump group America First Policies in March 2017, according to Politico.
The private equity executive and former military intelligence officer picked by Trump for secretary of the Navy, withdrew from consideration in February 2017 because of government conflict-of-interest rules.
Flynn resigned in February 2017 as Trump's national security adviser after disclosures that he had discussed US sanctions on Russia with the Russian ambassador to the United States before Trump took office and had misled Vice President Mike Pence about the conversations.
The White House chief digital officer stepped down in February 2017 after failing to pass an FBI background check, according to Politico.
An aide to Flynn, he was rejected in February 2017 after he was denied security clearance to serve on the US National Security Council, according to Politico.
An Army veteran and a former chairman of the New York Mercantile Exchange, Viola was nominated by Trump to be secretary of the Army. But he withdrew his name from consideration in February 2017.
Trump's director of scheduling resigned in February 2017 after failing a background check, according to Politico.
The acting US attorney general was fired by Trump in January 2017 after she ordered Justice Department lawyers not to enforce Trump's immigration ban.