March 1, 2026

What a War Powers Resolution Vote on Iran Actually Means

While Congress could narrowly pass a resolution, it would likely not have the two-thirds majority needed to overturn a Trump veto.

A person holds a sign in front of their face at a rally. The sign, in black letters, reads: "CONGRESS, TAKE BACK YOUR/OUR POWER NOW!" The exclamation point is read. There are about a dozen other people shown in the background at the outdoors rally.

A couple of hundred activists rally against joint US-Israel strike on Iran at Times Square in New York on February 28.Lev Radin/Sipa USA/AP

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Key members of Congress are calling for a vote on a war powers resolution on Monday to stop the Trump administration from continuing its illegal military assault against Iran without congressional authorization. 

The strikes, which began early Saturday, have been widespread, reportedly killed over 100 schoolchildren in Minab, a city in southern Iran, as well as Iranian supreme leader Ayatollah Ali Khamenei. Iran has retaliated, targeting US bases and allies in the region. Three US service members were killed in action on Sunday morning. 

The White House reportedly notified some members of the House and Senate Armed Service committees only after the strikes had already begun. Article 1 of the Constitution grants Congress, not the president, the power to declare war, and the War Powers Act all0ws Congress to halt unauthorized military action by requiring troop withdrawal within 60 to 90 days.

The House of Representatives’ bipartisan resolution, led by Rep. Thomas Massie (R-Ky.) and Rep. Ro Khanna (D-Calif.), would require Trump “to terminate the use of United States Armed Forces from hostilities against the Islamic Republic of Iran…unless explicitly authorized by a declaration of war or specific authorization for use of military force against Iran.” 

But in practice, Congress’s power is limited to halt Trump’s military actions, given that any resolution could be vetoed by the president and would require a two-thirds congressional majority to overturn. Even if the resolution on Iran does pass, it will likely be by a narrow margin, since Republican leadership, including Senate Majority Leader John Thune (R-S.D.) and House Speaker Mike Johnson (R-La.), have backed the US and Israeli strikes. In January, Senate Republicans blocked a similar war powers resolution after Trump’s attacks on Venezuela. 

As a result, any vote on a war powers resolution would be largely symbolic. But members of Congress say the vote is important anyway to make clear their stance on the war. “The Constitution requires a vote, and your Representative needs to be on record as opposing or supporting this war,” Massie wrote on X on Saturday.

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