Senate backs Iran war powers resolution as GOP pressure grows on Trump's deal to end war

Senate Majority Leader John Thune, R-S.D., arrives at the Capitol in Washington, Tuesday, June 23, 2026, as he prepares for a meeting with President Donald Trump. J. Scott Applewhite | AP Senate Majority Leader John Thune , R-S.D., said Tuesday that he expects Congress would likely vote on any broader Iran deal that emerges from the Trump administration's 60-day negotiating window , though he said he does not yet know what form that vote would take. "If there is some deal that is struck, I would expect at some point Congress would have some sort of vote on it," Thune told reporters. "Whether that's a resolution of disapproval or something, I don't know the answer to that," he added. Asked what role Congress should play in approving whatever comes out of the talks, Thune said many senators are still " anxious to hear more " from officials involved in the negotiations. The comments came shortly before the Senate voted 50-48 to adopt a House-approved Iran war powers resolution directing an end to U.S. hostilities, a bipartisan rebuke that underscores growing congressional unease with Trump's Iran policy. Republican Sens. Bill Cassidy of Louisiana, Susan Collins of Maine, Rand Paul of Kentucky and Lisa Murkowski of Alaska joined most Democrats in voting for the resolution. Sen. John Fetterman, D-Pa., joined most Republicans in opposition. …