The US House of Representatives voted on Tuesday for the third time this year to end military involvement in the conflict with Iran, approving a war powers resolution aimed at restricting President Donald Trump’s authority to continue military operations without explicit congressional approval. The measure passed with a vote of 220 to 204, maintaining a largely partisan divide while gaining additional Republican support compared to previous efforts. However, the resolution is unlikely to reach the president’s desk due to an expected veto.
The conflict, initiated by the Trump administration on February 28, has persisted for nearly seven months, marked by intermittent missile strikes and escalating tensions in the region. The war’s continuation has become a significant issue in the upcoming midterm elections, with lawmakers focusing on campaigning as voters face rising concerns over inflation and rising gasoline prices—effects largely attributed to the conflict’s disruption of oil flows through the strategic Strait of Hormuz.
Representative Seth Moulton, a Democrat from Massachusetts and a former Marine who served in Iraq, led the push for the resolution. He criticized the administration for prolonging a war initially promised to be brief, emphasizing Congress’s constitutional role in overseeing military engagements. “It’s time for Congress to actually ask tough questions,” Moulton stated.
Opposition voices included Republican Representative Brian Mast of Florida, who chairs the House Foreign Affairs Committee. Mast defended the administration’s actions as necessary to counter ongoing threats from Iran, describing the effort as an end to "forever wars" that have spanned decades. He argued that Iran continues to pose a persistent danger to US interests, asserting, “Enough is enough.”
The war has had a substantial financial impact, with the Congressional Budget Office (CBO) estimating costs exceeding $38 billion as of August 1, and ongoing monthly expenditures of $2 billion to $3 billion, dependent on conflict intensity. The CBO also projected that the war could raise inflation by approximately 0.5 percentage points through 2027. Public opinion polls conducted in July indicated that most Americans believe the conflict has not justified its costs.
Among Republicans, seven voted in favor of limiting the war powers, up from four in previous votes. These included representatives from key battleground states, such as Iowa’s Zachary Nunn and Mariannette Miller-Meeks, as well as retiring South Carolina legislator Nancy Mace. They were joined by GOP lawmakers Tom Barrett, Warren Davidson, Brian Fitzpatrick, and Thomas Massie, alongside unanimous Democratic support.
Despite multiple attempts in both chambers to curtail the administration’s military activities, the prospect of legislative success remains slim while President Trump retains veto power. The Senate’s earlier approval of a similar war powers resolution was quickly reversed following private pressure from the president.
The legal framework governing such conflicts—anchored in the War Powers Act of 1973—seeks to balance presidential authority with congressional oversight by limiting military engagement without authorization to set timeframes. Yet, the tension between executive and legislative branches continues to shape US involvement in Iran.
House Speaker Mike Johnson addressed the issue in a press conference Tuesday, acknowledging the need to reduce fuel costs but expressing optimism that the conflict was shifting toward a “new phase” with increased involvement from US allies to stabilize the area. Johnson echoed the president’s expectation that this transition would lead to lower gas prices and broader relief from inflation, though he tempered those hopes by noting, “I’d love it to happen today.”
With fewer than 50 days remaining before the midterm elections, the Iran conflict remains a contentious topic influencing political campaigns and legislative priorities across the United States.