Democrats and some Republicans have intensified scrutiny of Defense Secretary Pete Hegseth over the U.S. military campaign in Iran that began in February 2026, citing alleged violations of the War Powers Resolution and lack of congressional authorization. Rep. Thomas Massie introduced articles of impeachment on September 15 accusing Hegseth of abuses related to the conflict, civilian casualties, and other Pentagon actions, though House leadership delayed a vote until after the November 3 midterms. If Democrats gain House control, the resolution could advance quickly in the lame-duck session, with bipartisan support possible from critics of the war. Trader sentiment reflects uncertainty tied to midterm outcomes, Senate conviction thresholds, and any shifts in the Iran conflict or administration responses before year-end.