The U.S. Senate narrowly rejected a war powers resolution on Thursday, failing to muster the votes needed to limit President Donald Trump’s military campaign against Iran.
Defying Party Lines in the Upper Chamber
Thursday’s tight tally marks the second time in two weeks that the upper chamber has sidelined an effort to curb the administration’s offensive. Senators Lisa Murkowski of Alaska, Rand Paul of Kentucky, and Susan Collins of Maine crossed the aisle to vote in favor of the resolution. Their defections stem from persistent concerns regarding congressional oversight over a military engagement.
Democratic Senator John Fetterman of Pennsylvania broke with his own party to side with the Republican majority, mirroring a cross-aisle alliance seen in earlier procedural hurdles. Despite the bipartisan dissent, the measure fell short of the threshold required to advance, leaving the administration’s current military directives intact on Capitol Hill.
Last week, the House of Representatives approved a parallel resolution in a 214-208 vote, extending a symbolic rebuke to the White House. Similar bipartisan War Powers Act resolutions cleared both chambers in June, though President Trump dismissed those votes as meaningless, vowing to complete the campaign.
Strategic Fallout in the Strait of Hormuz
The operational reality on the ground remains a central point of contention for dissenting lawmakers. Senator Paul argued on Capitol Hill that the ongoing military engagement has left the United States in a worse strategic position, pointing to the prolonged disruption of vital maritime trade routes.
“If you look at the militarization of the Strait of Hormuz… there’s not an easy way to un-militarize the Strait. From that point of view, I think we’re in worse shape,” Paul told reporters. The Kentucky Republican has consistently opposed the administration’s strategy, standing alone in March as the sole Republican to back an initial effort to restrict unauthorized military force.
Other defecting Republicans have similarly shifted their legislative stances as the conflict’s toll mounts. Senator Murkowski declared in May that she would support measures to officially end hostilities and bring American service members home. Senator Collins, who initially opposed an earlier iteration of the resolution, has likewise altered her position as the campaign’s financial and human costs accumulate.
The human cost has driven intense scrutiny from congressional oversight committees. Defense Secretary Pete Hegseth faced sharp questioning before the Senate Appropriations Committee on July 21 regarding the $37.5 billion price tag attached to the Iran operations. With the Pentagon confirming that 18 American service members have died and nearly 100 others have been injured in two weeks since the Iran war resumed, pressure from both sides of the aisle has intensified.
Shifting Public Opinion Ahead of Midterms
Beyond the marble halls of Washington, American sentiment has grown increasingly critical of the administration’s foreign policy course. A nationwide AP-NORC poll conducted between July 23 and July 27 revealed that 64% of Americans believe the conflict with Iran has not been worth fighting. This builds on earlier data from a Reuters/Ipsos poll surveyed from June 18 to June 22, which found that just 24% of respondents viewed the war with Iran as worth the costs.
These divergent numbers underscore a growing political vulnerability for the GOP.
