US House Votes to End Iran War

## Catalyst Analysis: War Powers Resolution Approved by House On Tuesday, July 28, 2026, the U.S. House of Representatives passed a war powers resolution for the third time, seeking to end military action in Iran and requiring congressional authorization for sustained combat operations. Seven House Republicans joined all Democrats in supporting the measure. Representative Zach Nunn stated, “I will not support another open-ended war.” While the measure faces a likely veto from President Trump, it reflects a significant segment of Congress's desire to alter the trajectory of the conflict.

## Impact on U.S. Policy and Markets The war in Iran, initiated on February 28, 2026, has incurred costs of approximately $38 billion over six months, with projections of an additional $3 billion per month. A report from the Congressional Budget Office also forecasts the conflict could increase inflation by 0.5 percentage points in the first quarter of 2027. This situation is occurring ahead of midterm elections, where the war's impact on political campaigns is notable.

### Winners, Losers & Uncertainty While The political division surrounding the conflict and the potential for a presidential veto introduce uncertainty regarding the long-term implications for foreign policy.

### Risk Watch — Legal and Timeline Congress has made repeated attempts to limit the administration's military actions, with this latest resolution potentially reaching President Trump's desk. The timeline for any further action or a potential veto remains contingent on legislative procedures and executive decisions.