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Senate advances bill aimed at ending Iran War

The Senate vote challenged Trump’s authority to continue the Iran conflict without congressional approval.

Senate advances bill aimed at ending Iran War
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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 measure aimed at forcing President Donald Trump to withdraw U.S. troops from Iran, with Sen. Bill Cassidy joining Democrats and three other Republicans in support. The vote highlights growing Republican unease about the war, though the measure may not advance further.

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32 VOTES
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Donald Trump R · President of the United States
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Donald Trump
R · President of the United States

President whose Iran military campaign the legislation seeks to constrain

PRIMARY SUBJECT
Bill Cassidy
R · LA · SEN

Louisiana senator who supported the war-powers legislation for the first time

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

Connecticut senator who criticized the stalled peace negotiations and rising prices

Susan M. Collins
R · ME · SEN

Maine senator who supported the war-powers measure

Todd Young
R · IN · SEN

Indiana senator who previously changed his position on a Venezuela war-powers resolution

Lisa Murkowski
R · AK · SEN

Alaska senator who supported the war-powers measure

John Fetterman
D · PA · SEN

Pennsylvania senator who voted against the war-powers measure

Mike Rounds
R · SD · SEN

South Dakota senator who supports Trump’s decision to go to war but wants a long-term plan

Chuck Schumer
D · NY · SEN

Senate Democratic leader who said Democrats would keep pressing the issue

Josh Hawley
R · MO · SEN

Missouri senator who previously changed his position on a Venezuela war-powers resolution

Marco Rubio
Secretary of State

Secretary of State who agreed to a public hearing on Venezuela strategy

John Cornyn
R · TX · SEN

Texas senator whose primary opponent Trump endorsed

Rand Paul
R · KY · SEN

Kentucky senator who supported the war-powers measure

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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