A minimum of 16 Trump administration veterans have sharply criticized the ex-president, with terms such as “threat to democracy,” “erratic,” “delusional” and “narcissistic.”

Sarah Matthews was working in the White House on Jan. 6, 2021 when a mob of former President Donald Trump’s supporters stormed the U.S. Capitol in an attempt to stop the certification of President Joe Biden’s victory. She saw how Trump’s staff tried to get him to condemn the violence for hours without success.

“In my eyes, it was a complete dereliction of duty that he did not uphold his oath of office," Matthews told USA TODAY. "I lost all faith in him that day,”

Matthews resigned from her job as deputy press secretary in the wake of Jan. 6. She views Trump as a threat to democracy who tried to steal the 2020 election and would do it again.

Matthews is part of a large group of former Trump administration officials who have been sharply disapproving of the former president as he seeks to return to the Oval Office. Many who are questioning his fitness for the presidency held high-level positions in the White House, including former Vice President Mike Pence and multiple cabinet members.