Three Republican senators defied party leadership Wednesday and voted with Democrats to advance a resolution limiting President Trump's military authority against Iran without congressional approval. The motion failed by a single vote, 49-50, in a procedural battle that exposed deepening GOP fractures over executive war powers.
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See subscription optionsSenators Lisa Murkowski of Alaska, Susan Collins of Maine, and Rand Paul of Kentucky joined nearly all Senate Democrats in supporting the discharge motion for Senator Jeff Merkley's war powers resolution. The measure would have pulled the resolution from the Senate Foreign Relations Committee for a floor vote scheduled for next Thursday.
The vote took place at 2:47 p.m. Wednesday in a packed Senate chamber, with Majority Leader Chuck Schumer presiding over the tally. Paul cast his vote last, drawing audible gasps from the gallery when he sided with Democrats after weeks of public deliberation.
Fetterman Breaks Democratic Unity
Democratic Senator John Fetterman of Pennsylvania cast the only Democratic vote against the measure, citing concerns over restricting military flexibility during active hostilities. Republican Senator Pete Ricketts of Nebraska did not vote due to a family medical emergency, his office confirmed.
The narrow defeat marked Congress's seventh attempt to rein in Trump's war powers since military tensions with Iran escalated in February. Previous efforts in the House passed by margins of 15-20 votes but died in the Senate, where Republican leadership has blocked floor consideration.
The push comes as lawmakers from both parties question the scope of presidential military authority following the costly Iran conflict. Pentagon budget documents released Tuesday show the war has already cost American taxpayers $29 billion, including $11.2 billion in direct military operations and $17.8 billion in regional force deployments.
Escalation Timeline Fuels Congressional Pushback
The current crisis reflects decades of congressional abdication on war powers, dating back to the 2001 Authorization for Use of Military Force. Trump has cited that resolution, plus Article II executive powers, as legal justification for Iran operations without seeking new congressional approval.
Regional tensions exploded after the US and Israel launched coordinated strikes against Iran on February 28, targeting nuclear facilities in Natanz and Fordow. The operation, code-named "Persian Shield," involved 127 aircraft and 340 precision-guided missiles across six Iranian provinces.
Iran retaliated within 72 hours with attacks on Israel and US allies in the Persian Gulf, then closed the critical Strait of Hormuz shipping lane on March 15. The closure immediately spiked global oil prices to $187 per barrel and triggered worldwide supply chain disruptions affecting everything from semiconductors to grain shipments.
Fragile Ceasefire Under Strain
Pakistan brokered a ceasefire that took effect April 8 at 11:59 p.m. GMT, though follow-up talks in Islamabad failed to produce a lasting agreement. Three rounds of negotiations between April 15-22 collapsed over Iranian demands for sanctions relief and US insistence on naval inspections.
Trump later announced the truce would continue indefinitely despite ongoing military tensions and maritime restrictions that continue to disrupt global shipping. The Strait of Hormuz remains partially closed, with Iran permitting only 40 percent of normal commercial traffic under escort.
The 112-nation coalition supporting freedom of navigation in the Strait of Hormuz has deployed 67 warships to the region, creating a tense standoff with Iranian Revolutionary Guard forces. Weekly incidents involving warning shots or close encounters have occurred every week since the ceasefire began.
Next Steps and Political Calculations
The close vote signals continued Senate division over war powers even within party lines. Paul's libertarian stance on military intervention aligns with his long-standing opposition to undeclared wars, while Murkowski and Collins frequently break with Republican leadership on constitutional issues.
Merkley plans to file a new discharge petition by Monday, targeting the resolution for floor consideration during the week of December 9. Democratic leadership believes they can flip Senator Marco Rubio of Florida, who has privately expressed concerns about executive overreach but voted with leadership Wednesday.
The Iran ceasefire faces its next major test on December 15, when the current 90-day maritime restrictions expire. Pentagon officials warn that renewed Strait closures could trigger automatic military responses under existing rules of engagement, potentially rendering congressional war powers debates moot.
