The Office of Special Counsel has recommended that President Donald Trump remove his senior adviser Kellyanne Conway over repeated violations of the Hatch Act, which bans federal employees from using their office for partisan political activity.

The office, which is charged with enforcing the act, called Conway a “repeat offender” by on numerous occasions disparaging Democratic presidential candidates while speaking in her official role on TV and social media.

The letter to Trump details comments made by Conway including about Democratic presidential candidates Joe Biden and Bernie Sanders, whom she referred to as “two old white straight men career politicians.” It also included comments she made on her Twitter account, such as referring to Biden as “Creepy Uncle Joe.” Others attacked including Sens. Cory Booker and Elizabeth Warren, who also are seeking the Democratic presidential nomination.

“Ms. Conway’s violations, if left unpunished, would send a message to all federal employees that they need not abide by the Hatch Act’s restrictions,” said a letter from the OSC to Trump. “Her actions thus erode the principal foundation of our democratic system — the rule of law.”

The White House quickly rejected the recommendation of the OSC — whose head, Henry Kerner, was nominated by Trump.

OSC’s actions “are deeply flawed and violate her constitutional rights to free speech and due process,” said deputy press secretary Steven Groves in a statement. “Its decisions seem to be influenced by media pressure and liberal organizations,” Groves added.

She also in a May 29 interview said, “if you’re trying to silence me through the Hatch Act, it’s not going to work.”

The OSC’s statement notes its Thursday report followed a separate report in March 2018 that found Conway broke the Hatch Act in two interviews in which she “advocated for and against candidates in the 2017 Alabama special election for U.S. Senate.”