Bill Cassidy and Rand Paul helped sink the Senate war powers vote on Wednesday, turning a 47-50-1 result against an Iran resolution after both senators had backed it on March 19. The reversal left the measure defeated for now as the Senate headed into a two-week recess.
Cassidy, the outgoing Louisiana senator, said he had lost "my temper" during a contentious closed-door lunch Wednesday and then received a private White House briefing before the vote. After that briefing, he said it addressed "many of my concerns," and he voted no.
White House briefing shifts Cassidy
Cassidy wrote on X, "I want to thank Vice President Vance and Special Envoy Witkoff for the thorough briefing this afternoon on Iran" and "I appreciate the quick invitation to the White House to address many of my concerns." He had told Donald Trump, "voting for War Powers until I get a briefing," after saying the war "was supposed to last four weeks. It’s lasted four months. Our original objectives have not been achieved, and I want to know what’s going on."
The resolution would have directed Trump to remove the United States Armed Forces from hostilities within or against Iran unless Congress had explicitly authorized action through a declaration of war or a specific authorization for use of military force. Had the Senate and the House approved it, Trump would have been forced to veto it, which made Wednesday’s vote the immediate test of whether Senate Republicans would keep pressure on war powers.
Rand Paul keeps leverage open
Paul, who had also voted to advance the resolution on March 19, switched to present on Wednesday. He said that vote would "give the President more space and leverage to negotiate a lasting peace," a different approach from the one he took when the resolution first moved forward.
That break mattered because Cassidy and Paul had been part of the earlier coalition to advance the measure, then backed away after the closed-door lunch with Donald Trump and the White House briefing. Several senators told News that Trump spent more time talking about the election bill and the Iran war after his plans to sign the housing bill were canceled.
Senate recess delays the next move
With the Senate due to leave town for a two-week recess, the defeat ends any immediate congressional attempt to restrict presidential war-making authority over Iran. The vote does not settle the broader fight over how much room Trump should have to act on Iran, but it does stop this resolution before the Senate and the House could take it further.
What Cassidy said he wanted before voting — a briefing that answered his concerns about Iran — is now the clearest marker of what changed inside the chamber. The next formal chance to revisit the issue will come only after senators return.
