House Approves Measure to End Iran War as Three New Republicans Defect

US Navy sailors work on the flight deck of the aircraft carrier USS George Washington as it transits the Arabian Sea to support US military operations in the war with Iran on August 20, 2026.

The House on Tuesday voted to approve a measure that would require President Donald Trump to end his war with Iran, delivering a significant political rebuke of the administration’s military strategy just weeks before the midterms. This marks the third time the House—led by Democrats with support from a handful of Republicans—has ordered President Donald Trump to withdraw troops from Iran. Democrats emphasize that this vote is their most crucial push yet, timed as one of the chamber's final actions before the November elections.

Seven Republicans backed the resolution, an increase from the four GOP votes recorded for the previous two measures. Three new Republicans joined Democrats on Tuesday: Reps. Mariannette Miller-Meeks and Zach Nunn, who represent competitive seats in Iowa, and Rep. Nancy Mace of South Carolina, who is concluding her service in Congress after this term. The Republicans who previously voted in favor include Reps. Thomas Massie of Kentucky, Tom Barrett of Michigan, Warren Davidson of Ohio, and Brian Fitzpatrick of Pennsylvania.

“I will not support another open-ended war. We can defend Americans, pressure Iran, and pursue peace while ensuring Congress fulfills its constitutional responsibility,” Rep. Zach Nunn stated in a post on X following the vote.

While House GOP leaders do not formally whip their members on resolutions of this nature, President Donald Trump has publicly criticized Republicans who voted against him, signaling that he views the issue as a test of loyalty. A previous congressional attempt to limit President Donald Trump's military authorities in Iran ended dramatically when White House pressure forced a GOP senator to reverse his vote after initial passage.

It remains uncertain whether the Senate possesses the votes to pass the measure again, though Democrats intend to bring it forward later this week. Public skepticism regarding hostilities in Iran has grown outside the Capitol, with a CNN poll showing that 67% of respondents believe President Donald Trump's military decisions in Iran have harmed the US. Rising fuel costs have pushed diesel prices above $6 a gallon.

Throughout 2026, Democrats have compelled their GOP colleagues to take an official stance on the administration's hostilities with Iran, which have effectively evolved into the nation’s first one-party war. With even members of President Donald Trump's own party withholding support for further funding, the Pentagon’s multi-billion dollar request is now expected to stall until after the midterms.