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Senate advances resolution aimed at blocking further strikes on Iran without Congressional approval

The resolution seeks to limit Trump’s ability to continue military action against Iran without congressional approval.

Senate advances resolution aimed at blocking further strikes on Iran without Congressional approval
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This article1 analysis · Oct 6, 2026

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May 19, 2026
tl;dr

The Senate advanced a war-powers resolution by a 50-47 vote, with Louisiana Sen. Bill Cassidy supporting it for the first time. The vote highlighted growing Republican unease with President Donald Trump’s Iran war, though the measure may not advance further.

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37 VOTES
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Donald Trump R · President of the United States
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People in this story

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Donald Trump
R · President of the United States

President whose Iran military actions the resolution seeks to constrain

PRIMARY SUBJECT
Bill Cassidy
R · LA · SEN

Louisiana senator who supported the war-powers resolution

Cassidy's version of this story ↗
Christopher Murphy
D · CT · SEN

Connecticut senator who criticized the economic effects of the war

Susan M. Collins
R · ME · SEN

Maine senator who supported the resolution

Todd Young
R · IN · SEN

Indiana senator mentioned for his earlier vote on a Venezuela war-powers resolution

Lisa Murkowski
R · AK · SEN

Alaska senator who supported the resolution

John Fetterman
D · PA · SEN

Pennsylvania senator who voted against the resolution

Mike Rounds
R · SD · SEN

South Dakota senator who supports the decision to go to war but wants more discussion

Chuck Schumer
D · NY · SEN

Senate Democratic leader who commented after the vote

Josh Hawley
R · MO · SEN

Missouri senator mentioned for his earlier vote on a Venezuela war-powers resolution

Marco Rubio
Secretary of State

Secretary of State who agreed to a public hearing about Venezuela

John Cornyn
R · TX · SEN

Texas senator whose primary opponent received Trump’s endorsement

Rand Paul
R · KY · SEN

Kentucky senator who supported the resolution

Part of a bigger story

15 OUTLETS
Senate Advances Iran War Powers Measure Requiring Approval or Troop Withdrawal

The Senate advanced a war-powers measure seeking to require President Donald Trump to withdraw U.S. forces from Iran or obtain congressional approval, challenging his continued military campaign. Center outlets largely present the vote as a congressional challenge to Trump’s Iran war, highlighting Sen. Bill Cassidy’s support and signs of Republican unease; some also note uncertainty about the measure’s path.

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