WASHINGTON -- Notable firings and resignations from U.S. President Donald Trump's White House since he took office on Jan. 20, 2017.
Oct. 9: Trump announces UN Ambassador Nikki Haley's resignation, effective at end of the year.
Aug. 29: Trump announces that White House Counsel Don McGahn would leave sometime in the fall.
July 5: Environmental Protection Agency Administrator Scott Pruitt resigned after a series of controversies related to spending, management decisions and ethical lapses.
June 5: Communications aide Kelly Sadler left the White House after making off-the-cuff comments about the health of Senator John McCain.
April 12: Deputy national security adviser Ricky Waddell leaves as security adviser John Bolton remakes the National Security Council.
April 11: Deputy national security adviser Nadia Schadlow.
April 10: Homeland security adviser Tom Bossert was another victim of John Bolton's re-jigging of the National Security Council.
March 28: Veterans Affairs Secretary David Shulkin, who faced criticism after controversy over his taxpayer-funded travels.
March 22: National security adviser H.R. McMaster resigns and is replaced by former U.S. ambassador John Bolton.
March 13: Secretary of State Rex Tillerson is fired after months of tension with Trump and is replaced by CIA Director Mike Pompeo.
March 12: Special assistant and personal aide to the president John McEntee while under investigation by the Dept. of Homeland Security.
March 6: Economic adviser Gary Cohn quit after Trump announced tariffs on steel and aluminum imports.
Feb. 28: Communications director Hope Hicks resigned the day after she testified before the House Intelligence Committee, saying she told white lies in the course of her duties.
Feb. 7: Staff secretary Rob Porter resigns amid allegations from two ex-wives.
Dec. 13, 2017: Communications director for the White House Office of Public Liaison Omarosa Manigault Newman.
Dec. 8, 2017: Deputy national security adviser Dina Powell.
Sept. 29, 2017: Health and Human Services Secretary Tom Price.
Aug. 25, 2017: National security aide Sebastian Gorka.
Aug. 18, 2017: Chief strategist Steve Bannon is fired after a rift with Trump.
July 31, 2017: Communications director Anthony Scaramucci.
July 28, 2017: Chief of staff Reince Priebus.
July 21, 2017: Press secretary Sean Spicer
May 30, 2017: Communications director Michael Dubke.
May 9, 2017: FBI Director James Comey.
March 30, 2017: Deputy chief of staff Katie Walsh.
Feb. 13, 2017: National security adviser Michael Flynn.