Congress Passes Historic War Powers Resolution Rebuking Trump on Iran

A historic first — and a symbolic rebuke

The U.S. Senate voted 50–48 on Tuesday to approve a war powers resolution directing President Trump to remove American armed forces from hostilities against Iran — or seek explicit congressional authorization to continuewashingtonpost +1. It marks the first time both chambers of Congress have passed a concurrent resolution instructing a president to end a military action since the War Powers Resolution of 1973 was enactedbbc +1. The House cleared the same measure earlier this month 215–208, with four Republicans crossing the aislenpr.

Four Republican senators broke ranks: Rand Paul of Kentucky, Susan Collins of Maine, Lisa Murkowski of Alaska and Bill Cassidy of Louisiananytimes +1. Senators Mitch McConnell and Dave McCormick were absent, while Pennsylvania's John Fetterman was the lone Democrat to vote against the measurenytimes.

Why the vote matters despite its symbolic nature

The measure is a concurrent resolution, not legislation requiring the president's signature, so it carries no binding legal forcebbc +1. Trump dismissed it as "poorly timed and meaningless" on Truth Social, vowing to resolve the Iran standoff regardlessbbc. A White House official told the BBC the resolution was moot because a ceasefire agreed on April 7 had already ended active hostilitiesbbc.

Still, constitutional scholars called the vote consequential. Carl Tobias, the Williams Chair in Law at the University of Richmond, described it as "especially important now with the midterms looming and Trump's incessant efforts to expand executive power"nytimes. Senator Tim Kaine, who brought the measure to the floor, argued the Constitution vests the power to take the nation to war squarely in Congressreuters. It was the 10th Senate vote on a war-powers measure since U.S. and Israeli strikes on Iran began on February 28washingtonpost +1.

Growing pressure as costs mount

The vote landed the same day the Pentagon asked Congress for roughly $80 billion in emergency spending — most of it to replenish munitions depleted by the Iran campaignnytimes +1. A Reuters/Ipsos poll released Tuesday found only 24 percent of Americans believe the war has been worth its costreuters. Senate Majority Leader Chuck Schumer condemned what he called a "historic blunder," pointing to spiking gasoline prices and 13 service members killed since Februarynytimes.

Opponents of the resolution, including Senator James Risch of Idaho, warned it would undermine peace negotiations in Switzerland, where U.S. and Iranian officials are working toward a final agreement under a memorandum of understanding signed by both presidents on June 17reuters. Trump threatened earlier this week to "hit Iran very hard again" if Tehran failed to rein in its Lebanese proxies — comments Iran's government said violated the agreement's prohibition on mutual threatsnytimes.