The U.S. House of Representatives voted Wednesday to restrict President Donald Trump’s war powers regarding Iran, marking the latest congressional rebuke of the administration’s military engagement in the region. The resolution, which passed with bipartisan support, aims to reassert Congress’s constitutional authority to authorize the use of military force.

Four Republicans crossed party lines to vote for the measure, underscoring growing unease among some lawmakers about the scope and duration of U.S. military operations against Iran. The vote was the second time the House has approved such a resolution since the escalation of hostilities, reflecting persistent tensions between the executive and legislative branches over war powers.

The resolution directs the president to cease hostilities against Iran within 30 days unless Congress explicitly authorizes further military action or the United States faces an imminent armed attack. Supporters argue the measure is necessary to prevent an indefinite conflict without congressional approval, while opponents contend it undermines the president’s ability to protect national security.

House Speaker Mike Johnson, a Republican, criticized the resolution as a political maneuver that could embolden adversaries. “This resolution sends the wrong message to Iran and our allies,” Johnson said during floor debate. “It ties the hands of our commanders and signals weakness at a time when strength is required.”

Democratic leaders, however, framed the vote as a constitutional imperative. Representative Hakeem Jeffries, the House minority leader, argued that the administration had failed to provide a clear strategy or endgame for the Iran conflict. “The American people deserve a debate and a vote before their sons and daughters are sent into harm’s way,” Jeffries said. “This resolution is about restoring the balance of power that the founders intended.”

The White House has signaled that President Trump would veto the resolution if it reaches his desk, arguing that it infringes on his authority as commander in chief. The administration maintains that existing authorizations for the use of military force, including the 2001 Authorization for Use of Military Force, provide sufficient legal basis for operations against Iran.

The House vote comes amid a broader debate over defense spending and foreign policy. Lawmakers are also grappling with a $1.15 trillion defense authorization bill that faces an uncertain path in the Senate. The war powers resolution is expected to encounter significant opposition in the upper chamber, where Republicans hold a slim majority and have largely backed the president’s Iran policy.

Senate Majority Leader John Thune has not committed to bringing the resolution to a vote, and several Republican senators have expressed skepticism about limiting the president’s military options. “We cannot micro-manage military operations from Capitol Hill,” said Senator Tom Cotton, a Republican from Arkansas. “This resolution is a dangerous precedent that could hamper our ability to respond to threats.”

The Iran conflict has been a flashpoint in U.S. politics since the Trump administration launched a series of airstrikes against Iranian targets in response to attacks on American personnel and allies. The administration has characterized the operations as defensive and necessary to deter further aggression, but critics argue that the strikes have escalated tensions without a clear diplomatic off-ramp.

Human rights groups and anti-war organizations have praised the House vote as a step toward reining in executive power. “Congress has a constitutional duty to decide when the nation goes to war,” said Sarah Jackson, a spokesperson for the advocacy group Peace Action. “This resolution is a long-overdue check on an administration that has repeatedly bypassed that authority.”

The resolution’s passage also highlights divisions within the Republican Party over foreign policy. While most GOP lawmakers have supported the president’s approach, a small but vocal minority has raised concerns about the lack of congressional oversight and the potential for mission creep. The four Republicans who voted for the resolution — Representatives Thomas Massie, Matt Gaetz, Nancy Mace, and Victoria Spartz — have previously criticized military interventions without explicit authorization.

Massie, a Kentucky Republican, said the vote was about upholding the Constitution, not opposing the president. “I took an oath to defend the Constitution, not any one person,” Massie said. “Congress cannot abdicate its responsibility to authorize war, no matter who is in the White House.”

The House vote is unlikely to be the final word on the matter. The resolution now moves to the Senate, where its prospects are uncertain. Even if it passes both chambers, a presidential veto would require a two-thirds majority in each to override, a high bar in the current political climate.

Nevertheless, the repeated House votes on war powers signal a persistent effort by lawmakers to reclaim authority over military engagements. As the Iran conflict continues without a clear resolution, the debate over the balance of power between Congress and the presidency is likely to remain a central issue in Washington.