After the recess, the resolution was revived. On Wednesday, the bill passed due to the defection of four Republican representatives: Tom Barrett of Michigan, Warren Davidson of Ohio, Brian Fitzpatrick of Pennsylvania, and Thomas Massie of Kentucky. These lawmakers splintered from the Republican establishment to support the measure.

Massie, who was defeated in his primary election last month by a Trump-backed opponent named Ed Gallrein, highlighted the significance of the vote on social media. "The Iran War Powers Resolution that I cosponsored (opposing the war) just passed the House of Representatives," Massie wrote. "The People's House is sending a message: end this war."

Tom Barrett, an army veteran whose seat is vulnerable in the upcoming midterms, justified his support by citing constitutional limits. "Congress has the exclusive authority under the Constitution to declare war and authorize the use of force," Barrett stated. He noted that while the War Powers Act of 1973 delegates limited authority to the president, that authority has expired. "It is time for Congress to decide the scope of the mission and the appropriate limits on the use of force in Iran," he added.

Democrats remained unanimous in their support for the resolution. Representative Ayanna Pressley of Massachusetts called for immediate Senate action, writing, "The Senate must immediately follow suit and act to end this war." Representative Shontel Brown of Ohio emphasized the constitutional and economic implications, stating, "After months of chaos, higher costs, and wasted resources, it is time to end Trump’s costly war in Iran NOW."

Rising Costs and Public Backlash

The conflict has imposed significant financial and military costs on the United States. The Pentagon estimated in May that $29 billion had been spent on the war. However, analysts suggest this figure is a undercount; a public finance expert at Harvard University projected in April that the total cost could exceed $1 trillion.

Beyond financial strain, military preparedness is reportedly suffering. The Center for Strategic and International Studies issued a report in April warning that critical munitions, including Tomahawk missiles, Terminal High Altitude Area Defense systems (THAADs), and Precision Strike missiles (PrSMs), are running low as usage outstrips replacements.

Public opinion has turned sharply against the war. A poll from the Marist Institute for Public Opinion found that 60 percent of US citizens disapprove of Trump’s approach, a rise from 54 percent in March. This disapproval has spread to Republicans as well, with 22 percent now opposing the president's handling of the war, up from 15 percent. Overall, 61 percent of citizens believe the war has done "more harm than good."

The economic backlash is evident in skyrocketing prices for fuel and agricultural fertilizers. Furthermore, the unprovoked nature of the February 28 attack has drawn criticism, despite the administration’s argument that the war was necessary to prevent Iran from acquiring a nuclear weapon. The human toll is severe, with more than 3,400 deaths in Iran and at least 13 US soldiers killed, alongside casualties reported across the region.

Senate Votes Face Uphill Battle Against Veto

As the Iran War Powers Resolution moves to the Senate, where a similar bill passed in May, it encounters a formidable obstacle. The Senate passed its version of the bill earlier, but neither chamber has yet achieved the two-thirds majority required to override a potential presidential veto. President Trump is expected to veto any attempt to curtail his military powers, making the resolution’s legal enactment unlikely. However, the passage in the House signals a growing legislative and public resistance to the executive’s conduct of the war, potentially intensifying pressure on the administration to seek a diplomatic exit or justify the escalating conflict more rigorously to an increasingly skeptical public.