Senate rejects further war powers measure on Iran after earlier resolution

The Senate voted late Wednesday night to defeat a proposed war powers resolution concerning the United States' involvement in the Iran conflict, with a final tally of 47-50-1. The measure would have advanced a similar rebuke of President Donald Trump’s handling of the war, but it failed to gain sufficient support.

Republican Senators Rand Paul and Bill Cassidy, who had previously supported limiting the president’s war powers, altered their votes; Paul recorded a present vote and Cassidy voted against advancing the resolution. Senators Susan Collins and Lisa Murkowski again voted in favor, while Democratic Senator John Fetterman voted against.

President Trump posted on his social media platform that the vote “puts Iran on notice,” referencing the shift in Paul’s and Cassidy’s positions. Earlier that day, Cassidy told reporters he had pressed the president for more information about the conflict, noting that the operation had extended far beyond its original four-week timeline.

Cassidy later thanked Vice President JD Vance and special envoy Steve Witkoff for a briefing on Iran, while Paul said his stance on war powers had not changed but that he was giving the president “more space and leverage to negotiate a lasting peace” after being asked to consider the president’s negotiating position.

The vote marks the eleventh Senate consideration of an Iran war powers measure this year. Democrats have argued that congressional approval remains necessary even after a preliminary agreement with Iran, emphasizing the need for legislative oversight of any renewed hostilities.