Mulvaney resigned his post as special envoy to Northern Ireland Thursday, saying “I can’t do it. I can’t stay.”
The riot occurred after Trump addressed a massive rally in Washington fueled by the president’s repeated allegations that he lost the November election because of election fraud, which is not substantiated. A mob breached the Capitol building just as lawmakers were working to certify Electoral College votes in the election, sealing President-elect Joe Biden’s victory.
U.S. Transportation Secretary Elaine Chao was the first cabinet official to join a growing list of administration officials leaving the Trump administration after the Capitol was breached. Chao tweeted Thursday that serving was “an honor of a lifetime” but cited what occurred had “deeply troubled me in a way that I simply cannot set aside.”
Mulvaney said he called Secretary of State Mike Pompeo Wednesday night to tell him that he was resigning. He served as acting White House chief of staff from January 2019 until March 2020. Before that, he was director of the Office of Management and Budget.
White House deputy national security adviser Matt Pottinger resigned Wednesday. Pottinger’s boss, national security adviser Robert O’Brien, has no plans to quit, a senior administration official told Reuters. Pottinger was a leading figure in the development of Trump’s China policy.
The White House had no immediate comment. O’Brien had asked Pottinger to stay on past election day to facilitate the transition to Biden’s new team, the official said.
“Pottinger completed those tasks,” the person said.
Two top aides to first lady Melania Trump also resigned on Wednesday. Stephanie Grisham resigned as chief of staff to the first lady.
“It has been an honor to serve the country in the White House. I am very proud to have been a part of Mrs. Trump’s mission to help children everywhere, and proud of the many accomplishments of this administration,” Grisham said in a statement.
The White House social secretary, Rickie Niceta, also resigned, as did a deputy White House press secretary, Sarah Matthews.