Lawyers for Centers for Disease Control and Prevention Director Susan Monarez said late Wednesday that she remains in the role because only President Donald Trump can fire her.

In a post on X, the lawyers said White House staff in the personnel office notified Monarez of her firing on Wednesday. But the lawyers said Monarez is a presidential appointee, so only Trump can oust her.

“For this reason, we reject notification Dr. Monarez has received as legally deficient and she remains as CDC Director,” attorney Mark Zaid said in the post, “We have notified the White House Counsel of our position.”

It’s the latest in a leadership upheaval at the CDC. The statement came hours after the White House said it had fired Monarez after she refused to resign.

In an earlier statement, Zaid said Monarez “refused to rubber-stamp unscientific, reckless directives and fire dedicated health experts” and that “she chose protecting the public over serving a political agenda.”