Massie introduces impeachment articles against Defense Secretary Pete Hegseth

Republican Rep. Thomas Massie is introducing articles of impeachment against Defense Secretary Pete Hegseth on the House floor Monday afternoon.

Hegseth said on Monday that he's "not worried about" efforts to impeach him over his controversial leadership at the Pentagon and role administering the Iran war, announcing a rare press conference on the topic set for Tuesday.

"We’re not worried about that,” Hegseth said when asked by a reporter about Republican support on Capitol Hill amid the impeachment effort led by outgoing Rep. Massie.

"We're going to do a press conference tomorrow morning at the Pentagon on that very topic. So I'll save my remarks there. I hope you all come loaded for bear with your questions," said Hegseth, who hasn't held a press conference since May.

Hegseth's comments came the same day Massie reintroduced a privileged resolution to impeach Hegseth. Calls to impeach Hegseth have grown as several Republicans have attributed the GOP's sweeping midterm losses to the Iran war.

Massie went through the process in mid-September only to be thwarted by Speaker Mike Johnson, who canceled the final scheduled day of legislative business before the midterm elections -- staving off a vote at the time.

"Here's the parliamentary reality of it. What Speaker Johnson has done, I believe, after talking to the parliamentarian, is I will have to refile the articles of impeachment when we get back,” Massie told ABC News on Sept. 16. "They will expire. Maybe they'll grow. Maybe he'll do something between now and the election that warrants another article, or and so I'll have to refile those when we get back."

After Massie's reintroduction of the resolution, the House must take up the measure within two legislative days -- forcing Republicans to go on the record defending Hegseth after suffering major losses in the 2026 midterm elections.

Massie, a conservative who has gained a reputation as a constitutionalist through his seven terms in the House, lost a primary earlier this summer after President Donald Trump endorsed his opponent.

It's unclear whether an impeachment effort will succeed in the House, which is still under Republican control, but Massie told ABC News’ Jon Karl that he's confident there will be enough GOP defectors for it to pass. Massie needs a simple majority for the impeachment resolution to succeed in the House, meaning that just three Republicans need to vote with all Democrats to prevail.

It doesn't appear that any Democrats will vote against the impeachment effort. House Minority Leader Hakeem Jeffries came out in support of impeaching Hegseth saying on ABC News' "This Week" on Sunday that he's a "hard yes."

GOP leaders could offer a motion to "table" the resolution rather than take a direct vote on the underlying measure. That would need to pass by a simple majority.

House Oversight Committee Chairman James Comer declined to back the Hegseth impeachment effort, but Massie volunteered that "there’s a lot of questions about" Hegseth, including the embattled secretary’s strategy in Iran.

"I will weigh the debate and make a decision," retiring Republican Rep. Don Bacon told ABC News' Kyra Phillips on Friday when asked if he will vote to impeach Hegseth. "I do think the secretary has made some bad mistakes."

Even if the measure passes in the House, it would still need approval by a two-thirds majority in the GOP-controlled Senate, a lofty threshold that's unlikely to be met.

Trump has maintained that he has "every intention to keep" Hegseth atop the Pentagon.

In a video posted Thursday, Hegseth proclaimed that he will not back down -- doubling down on the Iran war and his cultural agenda at the Pentagon while drawing a parallel to Trump.

"This is not about me, but of course the other side, they’re obsessed. A disgruntled, defeated congressman, along with all his Democratic allies has also dropped sham articles of impeachment against yours truly. Just like they tried against President Trump twice," Hegseth said in the video.

ABC News' Steven Beynon contributed to this report.