The Senate approved a war powers resolution Tuesday in a narrow 50-48 vote seeking to block further U.S. military action against Iran, marking the first time such a measure has passed after ten previous attempts and exposing deep Republican divisions over President Donald Trump's handling of the conflict and the costly deal to end it.
The symbolic resolution, which does not carry the full force of law, passed only because two Republican senators were absent from the vote, including Senate Minority Leader Mitch McConnell of Kentucky, who was recently hospitalized for an undisclosed matter, and Sen. Dave McCormick of Pennsylvania. The outcome reflects mounting GOP concerns over both the military engagement and the financial terms of Trump's agreement with Iran, particularly as the Pentagon seeks $80 billion from Congress to replenish munitions and stockpiles depleted during Operation Epic Fury.
Republican Defections and Fiscal Concerns
Four Republican senators broke ranks to support the resolution: Lisa Murkowski of Alaska, Susan Collins of Maine, Rand Paul of Kentucky, and Bill Cassidy of Louisiana. One Democrat, Sen. John Fetterman of Pennsylvania, voted against the measure. The House had already approved its own version earlier this month, with four Republicans joining Democrats despite objections from House Speaker Mike Johnson and GOP leadership.
Republican criticism has centered particularly on the $300 billion fund designated to help Iran rebuild, a figure far exceeding the $1.7 billion that then-President Barack Obama refunded the country under his administration's 2015 Iran deal. "I believe President Trump is getting very poor advice on Iran," Sen. Ted Cruz of Texas said last week on his podcast after the deal was made public.
The Price Tag of Military Action
Defense Secretary Pete Hegseth is on Capitol Hill this week seeking roughly $80 billion in supplemental funding to shore up defense supplies in the aftermath of the Iran war, a request drawing scrutiny as many Americans face high gas prices and elevated costs of living. The Pentagon initially estimated the war cost $11.3 billion during its first week, with senators reporting that experts put the overall price tag of Operation Epic Fury at approximately $100 billion.
The Defense Department's funding request forms part of a broader military spending increase the White House is pursuing this year. The Trump administration is seeking $1.5 trillion in defense funding—a nearly 50 percent increase—including $350 billion in a budget reconciliation package that Johnson and GOP leaders are working to pass without Democratic support, similar to how they approved Trump's tax cuts bill last year.
Deal Terms and Nuclear Negotiations
The vote comes as Vice President JD Vance was overseas working to negotiate with Iran to end its nuclear ambitions, which had been among the stated rationales for the war. Trump is scheduled to meet with GOP senators Wednesday at the Capitol. According to one GOP senator granted anonymity to discuss private dynamics, the president is not pleased with Republicans who have criticized the Iran deal.
The terms of the agreement are spelled out in a memorandum of understanding that Trump signed last week, starting a 60-day clock for the sides to reach a broader agreement over ending Iran's nuclear program. The U.S. and Israel launched missile strikes on Iran on Feb. 28, initiating the conflict that Democrats have sought to halt through repeated war powers resolutions.
Sen. Tim Kaine, the Virginia Democrat who has led his party's efforts, said the pause in warfighting as Trump's team works to shore up a fragile ceasefire provides the perfect time for Congress to assess "what should the next chapter be." Senate Democratic Leader Chuck Schumer of New York said Americans have paid the price for "Trump's historic blunder in Iran. It'll go down in the history books as one of the worst foreign policy forays America has ever made."
House Democratic Leader Hakeem Jeffries said Tuesday, "We should not spend another dime of taxpayer dollars on Operation Epic Failure." While Trump would almost certainly veto any binding measure that passed, the resolution's passage stands as a powerful, if symbolic, statement from Congress and a rebuke of the administration's military actions.
Why This Matters:
The Senate vote exposes significant fractures within the Republican coalition over both fiscal discipline and executive authority in military matters. The $80 billion supplemental request and broader $1.5 trillion defense budget—a nearly 50 percent increase—raise fundamental questions about spending priorities at a time when Americans face economic pressures from inflation and high energy costs. The $300 billion reconstruction fund for Iran represents a massive commitment of resources with uncertain returns, dwarfing previous agreements and potentially setting precedents for future conflict resolution. The GOP's inability to maintain unified support for a Republican president's military action suggests that concerns over constitutional war powers and fiscal responsibility may be reasserting themselves within the party, even as the administration pursues ambitious defense spending increases through reconciliation. The outcome demonstrates that even symbolic congressional oversight can gain traction when cost considerations align with constitutional concerns about executive overreach in military engagements.