U.S. Senate Blocks Bipartisan War Powers Measure as Debate Intensifies Over Trump’s Authority in Iran Strikes

U.S., Washington DC: The United States Senate on Wednesday, March 4, 2026, rejected a bipartisan war powers resolution intended to restrict President Donald Trump from using military force against Iran without congressional authorization, with the measure failing in a largely party-line procedural vote of 47–53 amid ongoing air strikes conducted under Operation Epic Fury.

‎Supporters of the measure argued that “Congress must reassert its constitutional role in decisions that move the nation toward war.”

‎Most Republican senators opposed the resolution, contending that it would “kneecap U.S. forces and the Commander-in-Chief during a critical mission,” while the vote recorded limited cross-party divergence as Republican Senator Rand Paul supported the measure and Democratic Senator John Fetterman voted against it.

‎The vote followed the February 28 coordinated strikes by the United States and Israel after the killing of Iran’s supreme leader Ali Khamenei, while Defense Secretary Pete Hegseth indicated the conflict could last eight weeks and maintained the operation falls within presidential authority, as the United States House of Representatives prepares to consider a similar measure.

‎Meanwhile, Senator Tim Kaine stated that “Congress must reclaim its constitutional authority to declare war and prevent unnecessary forever wars".