Senate Votes on War Powers Resolution Regarding Iran

On June 16, 2026, the Senate voted 47 to 48 against a war powers resolution concerning Iran. The resolution aimed to direct President Trump to withdraw U.S. Armed Forces from hostilities with Iran unless authorized by Congress. Four Republican senators joined nearly all Democrats in support of the resolution, while Senator John Fetterman was the only Democrat to oppose it. The vote occurred amid ongoing discussions about a U.S.-Iran deal, which remains undisclosed. Senate Majority Leader John Thune requested the agreement's text and a briefing from the administration. The resolution was led by Democratic Senator Raphael Warnock, who urged bipartisan support. This vote follows a recent trend of diminishing Republican support for the war, with previous attempts to limit Trump's powers gaining traction. The House has also passed a resolution to end the war without congressional approval, but the Senate has yet to address it. The administration contends that the War Powers Resolution of 1973 is unconstitutional and claims that a ceasefire has paused the statutory deadline for military action. A group of Democratic senators has requested clarification on the administration's legal stance regarding hostilities.