House vote sharpens Trump Iran rift

A divided US House of Representatives has approved a war powers resolution directing President Donald Trump to end American military involvement in Iran, handing the White House a symbolic but politically pointed rebuke as unease grows on Capitol Hill over the scope and duration of the conflict.

The measure passed 215-208 on Wednesday, with four Republicans breaking ranks to join Democrats in support. It now heads to the Senate, where its prospects remain uncertain, and would still face a presidential veto if it clears both chambers. The vote does not immediately halt US operations, but it marks the first time the Republican-controlled House has adopted a resolution aimed at forcing Trump to wind down the Iran campaign launched in late February.

The resolution requires the withdrawal of US forces from hostilities against Iran unless Congress authorises the mission. Its supporters argue that the president exceeded his authority by committing forces without explicit approval from lawmakers, while the administration maintains that military action is lawful and necessary to counter threats from Tehran and prevent Iran from advancing its nuclear programme.

The four Republicans who backed the measure — Thomas Massie, Brian Fitzpatrick, Tom Barrett and Warren Davidson — gave Democrats the margin needed to pass it. Their votes underscored a small but visible split inside Trump’s party over war powers, constitutional limits and the political cost of an open-ended conflict in the Middle East.

Gregory Meeks, the ranking Democrat on the House Foreign Affairs Committee and sponsor of the resolution, framed the vote as a defence of Congress’s constitutional authority to decide whether the country goes to war. Democrats were united behind the measure, arguing that the White House had not provided a clear strategy, timeline or legal basis for continuing operations in Iran.

Republican leaders opposed the resolution, saying it risked weakening the president’s negotiating position and limiting his ability to respond to threats against US forces and allies. Speaker Mike Johnson and other Trump allies have argued that the commander-in-chief has authority to conduct limited military operations without waiting for Congress, especially where national security interests are at stake.

The vote followed weeks of procedural manoeuvring. A House vote expected before the Memorial Day recess was delayed after signs that a handful of Republicans were prepared to join Democrats. Senate lawmakers had earlier advanced a similar war powers measure in a 50-47 procedural vote, with four Republicans siding with nearly all Democrats, signalling that congressional resistance was not confined to one chamber.

Trump has sought to describe the Iran campaign as limited, while critics say its duration and intensity have moved beyond short-term military action. US operations began alongside Israeli strikes on February 28 and have continued amid broader regional tensions involving Iran, Israel, Lebanon and Gulf security routes. The administration has cited threats to US personnel, shipping lanes and non-proliferation goals as justification for maintaining pressure on Tehran.

The War Powers Resolution of 1973 requires a president to notify Congress after introducing US forces into hostilities and to terminate involvement within a set period unless lawmakers grant authorisation. Presidents from both parties have disputed aspects of the law, often treating it as a reporting framework rather than a firm restriction. The latest House vote revives that long-running contest between executive flexibility and legislative control over military action.

For Trump, the outcome creates a political complication even if it does not translate into binding policy. The House vote puts Republicans on record at a time when the party is preparing for midterm elections and facing internal debate over foreign policy, spending and loyalty to the president. Some Republican lawmakers fear that a prolonged conflict could drain attention from domestic priorities and expose vulnerable members to criticism over costs and casualties.

Democrats see the resolution as both a constitutional intervention and a political opening. They have linked the Iran operation to questions over military spending, transparency and presidential accountability, while urging the Senate to act quickly. Their strategy is to force Republicans to defend Trump’s handling of the war and to highlight divisions within the governing party.

The White House has shown no sign of retreat. Officials have argued that congressional action could embolden Iran and complicate diplomatic efforts. Trump retains the power to veto the measure, and Congress would need a two-thirds majority in both chambers to override him, a threshold that appears out of reach given current Republican opposition.