Rep. Jackie Speier, D-Calif., claimed there's a "rumor" in Congress that President Trump is set to fire special counsel Robert Mueller before Christmas.

Speier made the claim in an interview Friday with PBS affiliate KQED.

"The rumor on the Hill when I left yesterday was that the president was going to make a significant speech at the end of next week," she said. "And on Dec. 22nd, when we are out of D.C., he was going to fire Robert Mueller.”

Mueller, a former director of the FBI, was appointed by the Justice Department to investigate Russia's interference in the 2016 election, including whether Russia colluded with Trump's campaign.

The investigation has bedeviled Trump's presidency, and though Trump has called it a "witch hunt," the White House has insisted there were no plans to terminate Mueller.