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◆ Mixed look for CassidyForeign Policy

Senate advances Iran war powers resolution as beaten GOP Sen. Bill Cassidy changes vote to defy Trump

Cassidy joined three other Republicans in voting to advance a resolution limiting military action against Iran without congressional approval.

Senate advances Iran war powers resolution as beaten GOP Sen. Bill Cassidy changes vote to defy Trump
Image · New York Post

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Outlet credibilityNew York Post65/100 MEDIUM
This article1 analysis · Oct 6, 2026
May 20, 2026
tl;dr

The Senate advanced an Iran war powers resolution by 50-47, with Bill Cassidy joining three other Republicans in supporting it. The vote puts pressure on the White House to seek congressional authorization for military action against Iran.

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37 VOTES
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Bill Cassidy R · LA · SEN
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Bill Cassidy
R · LA · SEN

Senator whose vote helped advance the Iran war powers resolution

PRIMARY SUBJECT
Christopher Murphy
D · CT · SEN

Senator who spoke about stalled negotiations and rising prices

Tommy Tuberville
R · AL · SEN

Senator who missed the vote

Susan M. Collins
R · ME · SEN

Senator who voted to advance the resolution

Donald Trump
R · President of the United States

President whose administration's Iran military action the resolution would constrain

Lisa Murkowski
R · AK · SEN

Senator who voted to advance the resolution

John Fetterman
D · PA · SEN

Senator who voted against the resolution

Mike Rounds
R · SD · SEN

Senator who discussed growing concerns among Republicans about the administration's long-term plan

Thom Tillis
R · NC · SEN

Senator who missed the vote

Tim Kaine
D · VA · SEN

Senator who pushed the resolution

John Cornyn
R · TX · SEN

Senator who missed the vote

Rand Paul
R · KY · SEN

Senator who voted to advance the resolution

ALSO MENTIONED  Richard Nixon, Former president whose veto of the War Powers Act Congress overrode

Part of a bigger story

31 OUTLETS
Senate Advances Iran War Powers Resolution With Cassidy’s Support

The Senate advanced an Iran war-powers resolution in a 50-47 vote, with Bill Cassidy voting to move it forward. Left-leaning outlets frame Cassidy’s vote as a post-primary break with Trump and raise questions about its timing. Center outlets mainly explain the resolution, Cassidy’s support, lawmakers’ differing views and the measure’s uncertain prospects. Right-leaning outlets also connect the vote to Cassidy’s primary loss but describe it as a reversal or defection.

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