The Federal Election Commission chairwoman posted a letter from Donald Trump telling her she was fired. She refused to leave.

Ellen Weintraub wrote, a frequent Trump critic, on Thursday night, “Received a Letter from POTUS purporting to Remove me as Chair & Commissioner.” She added, “There is a legal way to remove FEC commissioners. This isn’t that.”

Weintraub served a six-year tenure in 2002. According to federal law, Weintraub is allowed to continue as a commissioner after her six-year term expires until a successor is ready to join the Commission, which oversees the compliance with federal electoral laws.

She didn’t respond to a comment request on Thursday evening. A comment request from the White House was also not answered. Weintraub’s firing comes at a time when the Trump administration is removing top officials from the US government.

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Congressional Democrats condemned the move. “This attack on the FEC, when the agency is reviewing complaints against President Obama, reeks corruption,” said Joe Morelle, New York’s top Democrat in the House Administration Committee that oversees federal election.

The FEC is run by six commissioners, and no more than three members of a single political party can serve at a time. Weintraub voted for an investigation of the president, based on allegations of violations of rules prohibiting coordination between his campaign, and super political action committees allied to it, and issues regarding accusations that Russia attempted to influence the outcome 2016 election.

She also voted for an investigation into Trump’s promotion of some of his businesses during the 2016 election campaign, such as hotels, golf clubs, bottled waters and wineries, which included at rallies.

In this case, as in so many others that involved Trump, the FEC was deadlocked at 3-3. The three Republican commissioners voted against further investigations. Four votes are needed to proceed with an inquiry.

The FEC is responsible for ensuring that federal campaigns, political parties, and political action Committees comply with the election laws. Three members of the six-member commission cannot be from the same party.