Senate advances bill aimed at ending Iran war as Cassidy, after primary loss, flips to support it

Key points

• The Senate advanced legislation on Tuesday (May 19, 2026) that seeks to force President Donald Trump to withdraw from the Iran war, as a growing number of Republicans defied the President's wishes.
• Since Mr.
• Trump ordered the attack on Iran at the end of February, Democrats have forced repeated votes on war powers resolutions that would require him to either gain congressional approval for the war or withdraw troops.
• Republicans had been able to muster the votes to reject those proposals, but Louisiana Senator Bill Cassidy, fresh off a primary election loss in which Mr.
• Trump endorsed his opponent, switched sides to deliver a crucial vote to pass the legislation.