Congress Passes War Powers Resolution for First Time, Defying Trump on Iran

On Tuesday, June 24, 2026, the United States House of Representatives approved a war powers resolution for the first time in its history, directly challenging President Donald Trump's authority to conduct military operations against Iran. The measure, passed by a narrow majority, signals a rare bipartisan assertion of congressional prerogative in foreign policy. The resolution, introduced by a coalition of moderate Democrats and a handful of Republicans, asserts that any further strikes against Iranian targets must receive explicit authorization from Congress. It references the War Powers Act of 1973 and emphasizes that the president's ability to engage in hostilities without legislative approval must be curtailed, especially after the recent escalation following the drone strike that killed a senior Iranian commander. The language reflects longstanding concerns among members of both parties about the constitutional implications of unchecked executive action. The vote comes amid a broader pattern of congressional pushback against the administration's unilateralist approach to Iran, which has included covert cyber operations, increased naval deployments, and a series of sanctions. Historically, only the 1973 War Powers Resolution and the 1996 AUMF amendments have been invoked in similar contexts, making this vote a notable milestone in the evolution of the legislative war‑making power. If enacted into law, the resolution would formalize a new check on presidential war‑making, potentially reshaping the balance of power between the executive and legislative branches. For Trump, whose tenure has been marked by frequent use of emergency authorities, the vote could foreshadow increased congressional oversight in future crises, while for Iran it may alter calculations regarding escalation and diplomatic engagement.