Hegseth Impeachment: A Constitutional Mechanism Meets a Lame-Duck Power Struggle

A Republican lawmaker files privileged impeachment articles against the defense secretary over the Iran war. The real question: who controls the clock — the outgoing GOP majority or the incoming Democratic one?

Thomas Massie, the outgoing Republican representative from Kentucky, introduced eight articles of impeachment against Defense Secretary Pete Hegseth on Monday, accusing him of violating federal law and the constitution in connection with the US war on Iran and other military actions. Massie filed it as a privileged resolution, forcing the House to act within two legislative days. Hegseth dismissed it as a "political spectacle" and "stunt."

The mechanics are straightforward. The House needs a simple majority to impeach. If it does, the Senate tries the case, needing a two-thirds supermajority to convict and remove. For a cabinet member, the vice-president presides over the Senate trial — unlike presidential impeachment, where the chief justice presides. No cabinet official has ever been removed through this process. The timing is the story. Democrats won majorities in both chambers in the midterm elections but don't take control until January. The current Republican House must decide whether to table, vote, or let the resolution carry over. A Republican aide told CNN there is a "strong argument" for referring the matter to a committee for investigation rather than proceeding directly to trial. According to the New York Times, impeachment resolutions — unlike legislation — do not expire at the end of a congressional session, meaning Democrats could take it up with their new majorities. Historical precedent offers little comfort to either side. Three presidents have been impeached by the House — Clinton, Andrew Johnson, and Trump (twice) — but all were acquitted by the Senate. Nixon resigned before a full House vote. The most recent cabinet impeachment was Alejandro Mayorkas in 2024, when House Republicans impeached Biden's homeland security secretary over immigration policy. The Senate dismissed the charge without a trial. The Massie move is unusual precisely because it comes from within the president's own party. The eight articles center on war powers — specifically the Iran conflict and broader military actions — making this a constitutional separation-of-powers fight rather than the more typical partisan policy dispute. Massie, an outgoing member with nothing to lose electorally, is essentially forcing his own caucus to take a position on executive war-making authority. The extractive dynamics cut in multiple directions. If the Republican majority tables or kills the resolution, it shields the executive from accountability at the cost of congressional war-powers credibility. If Democrats inherit the resolution in January, the impeachment becomes a partisan vehicle regardless of its constitutional merits, and the war-powers argument gets buried under political trench warfare. Either way, the public bears the cost of a degraded accountability mechanism. The twenty-year question is whether impeachment as a tool retains any teeth. After two Trump impeachments, the Mayorkas impeachment, and now a same-party cabinet impeachment filed as a privileged resolution, the mechanism is being stress-tested to its limits. Each use without conviction normalizes the filing while devaluing the threat. The trajectory points toward impeachment becoming a permanent feature of partisan combat rather than a constitutional emergency brake.