Republican Rep. Thomas Massie of Kentucky says he intends to force a House vote on impeaching Defense Secretary Pete Hegseth when lawmakers return to Washington, warning that the effort could be only a preview of the scrutiny Hegseth will face once Democrats take control of Congress in January.

Massie said he plans to reintroduce his articles of impeachment as soon as Monday or Tuesday unless Hegseth resigns. He wrote Thursday that his proposal is a “much gentler version” of what Democrats could pursue with control of congressional committees, including hearings and investigations. Multiple Republican sources told CNN they believe enough GOP lawmakers could join Democrats for the impeachment resolution to pass the House even before the new Congress is seated.

Massie originally introduced eight articles against Hegseth in September. They accuse the defense secretary of violating constitutional and statutory limits involving U.S. military operations in Iran, Yemen and Latin America, among other allegations. The earlier effort never received a floor vote after House leaders ended legislative business ahead of the midterm recess. Hegseth and the administration reject Massie’s accusations.