In January 2017, Trump added Bannon to the National Security Council's Principals Committee, a small group of advisors that considers national security policy issues. The decision spurred critics to question whether Bannon had too much power in the White House.
But in April 2017, a White House memo revealed that Bannon had been removed from the NSC's Principals Committee.
Bannon feuded with other members of the president's inner circle, including Mr. Trump's son-in-law and adviser Jared Kushner. Bannon's tumultuous tenure at the White House ended on Aug. 18, 2017.