After Trump's Briefing, Cassidy Flips — Senate Blocks Second Iran War Powers Resolution

Here's a wild 24-hour political whiplash story out of Washington, and it matters because it goes to a pretty basic question: does Congress actually have a say in whether the U.S. is at war?

Let's back up. The U.S. has been militarily involved in a conflict with Iran since late February. Congress has been trying, repeatedly, to invoke the War Powers Act — a 1973 law that gives Congress the ability to direct the president to pull U.S. troops out of a conflict if it hasn't been formally authorized by a declaration of war. Democrats, led by Sen. Tim Kaine of Virginia, have been pushing these resolutions for months.

On Tuesday, June 24, something surprising happened: the Senate actually passed one of these resolutions 50-48, with four Republicans breaking ranks to side with Democrats. Those four were Sens. Bill Cassidy (Louisiana), Susan Collins (Maine), Rand Paul (Kentucky), and Lisa Murkowski (Alaska). That was a real shot across the bow at Trump.

Then came Wednesday — and things got dramatic fast.

Trump met with Senate Republicans for a closed-door lunch at the Capitol, and it did not stay polite. When Trump asked the room why anyone would vote for a war powers resolution, Sen. Cassidy stood up and essentially said, 'You really want to know?' He told Trump directly that the Iran conflict 'was supposed to last four weeks. It's lasted four months. Our original objectives have not been achieved, and I want to know what's going on.' Trump, infuriated, reportedly called Cassidy a 'lunatic.' The argument got loud enough that the senator sitting next to Cassidy had to pull him back into his seat. Cassidy later told reporters, 'I lost my temper — that's the Irish in me.'

Here's the twist: hours after that very public showdown, Cassidy was invited to the White House for a private briefing with Vice President JD Vance and Middle East envoy Steve Witkoff. Whatever they told him, it worked. Cassidy posted on X thanking them for a 'thorough briefing' that addressed 'many of my concerns' — and then went back to the Capitol and voted against the very resolution he had supported the day before.

Meanwhile, Rand Paul — who has consistently voted to limit Trump's war powers — switched to voting 'present,' essentially sitting this one out. He said he wanted to give Trump 'more space and leverage to negotiate a lasting peace.'

The result: the resolution failed 47-50-1. Two Republicans — Collins and Murkowski — held firm and still voted yes. The Senate then left for a two-week recess.

Trump celebrated on Truth Social, calling out Cassidy and Paul's switches by name and declaring, 'This vote puts Iran on notice!'

Now, here's the important context for you personally: both resolutions — Tuesday's and Wednesday's — were largely symbolic. They don't have the force of law, and even if both chambers passed one, Trump would simply veto it. So in a practical sense, nothing about the U.S. military posture in Iran changed this week. But symbolically, this is a big deal. For one brief moment on Tuesday, Congress sent a clear signal that the Iran war lacks support. By Wednesday night, that signal had been walked back — and the mechanism that walked it back was a private White House briefing and presidential pressure, not new facts or a change in the situation on the ground.

For everyday Americans, the story underneath this is simpler: your tax dollars are funding a conflict that is now four months old, the original goals haven't been publicly defined or achieved by the administration's own implicit admission, and the senators who tried to demand more transparency folded within hours of pushback. The Senate is now on recess for two weeks.