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◆ Mixed look for CassidyForeign PolicyDefense / Military

Senate advances resolution to end Iran war as GOP Sen. Bill Cassidy flips to support it

Cassidy supported advancing the resolution, saying the administration had not provided Congress enough clarity about the Iran operation.

Senate advances resolution to end Iran war as GOP Sen. Bill Cassidy flips to support it
Image · NBC News

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This article1 analysis · Oct 6, 2026
NBC News
May 19, 2026
tl;dr

The Senate voted 50-47 to advance a resolution directing President Donald Trump to end U.S. hostilities with Iran unless Congress authorizes them. Bill Cassidy joined the “yes” votes for the first time after previously voting no.

Community verdict

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

Senator who voted to advance the Iran war powers resolution after previously voting against it

PRIMARY SUBJECT
Tommy Tuberville
R · AL · SEN

Senator noted as absent from the vote

Susan M. Collins
R · ME · SEN

Senator who supported advancing the resolution

Donald Trump
R · President of the United States

President whose Iran war is the subject of the resolution

Lisa Murkowski
R · AK · SEN

Senator who supported advancing the resolution

John Fetterman
D · PA · SEN

Senator who opposed the resolution

Thom Tillis
R · NC · SEN

Senator noted as absent from the vote

Chuck Schumer
D · NY · SEN

Senate minority leader who praised the vote and criticized Trump’s war

Tim Kaine
D · VA · SEN

Senator who introduced the resolution

John Cornyn
R · TX · SEN

Senator noted as absent from the vote

Rand Paul
R · KY · SEN

Senator who supported advancing the resolution

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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