The House voted 214-208 on Thursday to require congressional approval for continued military action in Iran, marking the second time lawmakers have rebuked President Donald Trump's handling of a conflict that's now dragged on for nearly five months with no clear resolution in sight. The Senate rejected a similar measure just hours earlier, 47-49.
The votes don't carry the force of law. But they signal eroding Republican support on Capitol Hill as the war grinds on, fuel prices climb ahead of midterm elections this fall, and crucial shipping lanes through the Strait of Hormuz remain largely closed. A handful of Republicans broke ranks to vote with Democrats in the House, though the vast majority in both chambers backed the president's authority to continue operations without congressional authorization.
The War's Trajectory
Joint U.S. and Israeli airstrikes launched the conflict in late February. A ceasefire reached in April collapsed earlier this month when Trump declared it "over." The president has maintained that continued strikes don't constitute a return to full-scale war or long-term military commitment. After the first House vote to halt operations in early June, he called the measure "unpatriotic" and "meaningless" on social media.
Washington Rep. Pramila Jayapal, the Democrat who led Thursday's resolution, said the war has had "no clear mission, no strategy, no end goal." The White House pushed back hard, issuing a statement Thursday that encouraged lawmakers to vote against the resolutions. "The President has the Constitutional authority to defend the United States and our citizens from the danger posed by the Iranian regime," the policy statement said. "This requires the ability to act decisively to ensure it never obtains a nuclear weapon."
Eighteen service members have died since the war began. Foreign Affairs Committee Chairman Brian Mast, R-Fla., read their names on the House floor Wednesday evening. "To belittle this mission is to belittle and demean the very service these members gave their life for," Mast said. "Their sacrifice was not meaningless. This operation is bringing reckoning for the hundreds of times Iran has attacked and killed people of the United States of America."
Political Costs and Defections
Republicans who've voted against the war face immediate political consequences. After the June House vote, Trump called the four defecting Republicans "GRANDSTANDERS!" and said they should be "ashamed of themselves." When four Senate Republicans voted for a similar resolution in June, Trump labeled them "losers" and confronted them at a GOP luncheon the next day.
Louisiana Sen. Bill Cassidy, who'd just lost reelection in a primary after Trump endorsed his opponent, clashed with the president directly. "This was supposed to last four weeks. It's lasted four months," Cassidy said. "Our original objectives have not been achieved." He told Trump he needed to provide more public details about the conflict. The White House later gave Cassidy a one-on-one briefing, and the Louisiana Republican reversed his position in a late-night do-over vote. He voted against Thursday's resolution.
Maryland Sen. Chris Van Hollen, who led the Senate effort, said Americans are "experiencing the rising costs" of what he called "a very unpopular war." New York Rep. Gregory Meeks, the top Democrat on the House Foreign Affairs Committee, said service members died for "an illegal unauthorized war that the American people don't want."
Public Opinion and Funding
A Washington Post/Ipsos poll conducted in July found that most Americans disapprove of Trump's handling of Iran and don't think the war has been worth fighting. Only about two-thirds of Republicans approve of the president's approach. Most Republicans—about 6 in 10—think the war's been worthwhile and believe military action will prevent Iran from developing nuclear weapons, but roughly one-third remain unconvinced.
The House adopted a Republican-only $95 billion budget proposal Wednesday that includes funding for Iran operations, but its Senate prospects are uncertain. Sen. Tim Kaine, D-Va., said if Congress can't force Trump to seek authorization, lawmakers should block war funding. "He wants to break the law, fine, let him break the law, but we control the appropriations process, and that's what we need to use," Kaine said.
Democrats pledged to continue forcing votes on the issue. "If Donald Trump won't listen to the people and end this war then Congress must," said Senate Minority Leader Chuck Schumer, D-N.Y.
American airstrikes continue even as diplomatic efforts show little public progress and officials on both sides have dug in over the Strait of Hormuz dispute. The conflict threatens further worldwide economic disruption as midterm elections approach.
Why This Matters:
Congressional authority over war powers isn't symbolic—it's constitutional. The framers deliberately vested Congress, not the executive, with the power to declare war. These votes reveal fractures in Republican unity at a politically precarious moment, with rising fuel costs and an unpopular conflict threatening the party's midterm prospects. The economic consequences are real: the Strait of Hormuz closure disrupts global energy markets, and American families are paying more at the pump. Meanwhile, 18 service members have died in a conflict that's lasted four times longer than initially projected, with no clear endgame articulated to the public or Congress. The fiscal implications of a $95 billion budget proposal that includes war funding—passed on party lines with uncertain Senate prospects—underscore the institutional tensions between executive authority and legislative oversight. Whether through the power of the purse or continued resolutions, Congress is asserting its constitutional prerogatives in a conflict where objectives, timeline, and exit strategy remain undefined.