The voters of Louisiana spoke clearly on May 16th. They gave Bill Cassidy 25 percent of the vote — third place in his own Republican primary — and sent him home. Trump endorsed Julia Letlow. She won 45 percent. The message from Louisiana Republicans couldn't have been more direct if they'd written it on a billboard outside his Senate office.
Cassidy heard the message. Then he voted to kneecap the president anyway.
Four days after getting bounced from his own party's primary, Cassidy cast the deciding vote to advance a War Powers Resolution that would force President Trump to pull U.S. forces out of operations against Iran. The resolution, sponsored by Democratic Sen. Tim Kaine, requires explicit congressional authorization — a declaration of war or a specific AUMF — before the president can continue military action. The Senate passed it 50-47. It was the eighth time Democrats tried to advance this resolution. The first seven failed.
The difference this time was a senator with nothing left to lose and an axe to grind.
To be fair, Cassidy wasn't alone. Susan Collins voted yes. Lisa Murkowski voted yes. Both senators have built entire careers on being available when Democrats need a Republican co-signature on something. Their presence on this vote was institutional. Expected. Practically ceremonial at this point.
Rand Paul voted yes too — but Paul is a different case. He's been arguing against undeclared wars and unchecked executive military authority since before it was politically convenient to do so. His vote here is consistent with everything he's said for the last fifteen years. Disagree with him if you want, but the man has a spine and a position and they match each other. That's rarer in Washington than it should be.
Cassidy's vote has no such explanation. What Cassidy has is a history. In 2021, he voted to convict Donald Trump following the second impeachment trial — one of only seven Republican senators to do so. Louisiana Republicans made clear how they felt about it. His approval ratings in the state cratered. He knew for years that his primary was going to be a fight. Trump endorsed his opponent. The voters delivered their verdict.
And then Cassidy walked onto the Senate floor and delivered his.
The resolution isn't going to become law. It needs to pass a final Senate vote, then survive the House, then get to a president who will veto it without blinking. The votes to override that veto don't exist. This entire exercise was a political statement — and Cassidy handed Democrats the margin they needed to make it.
One Democrat, to his credit, didn't play along. John Fetterman of Pennsylvania voted against advancing the resolution. Fetterman has been the most surprising senator of this era — a progressive who keeps stumbling into common sense on foreign policy and national security. He was the one Democrat willing to say out loud what the others wouldn't: this resolution isn't about Iran. It's about the midterms.
Cassidy knows that too. He just doesn't care anymore, because there are no more consequences coming for him. The last consequence already arrived — and instead of accepting it with any dignity, he spent the following week proving his constituents right.
Primary accountability exists for exactly this reason. When senators know they'll face voters who are paying attention, they tend to behave differently. When that accountability disappears — when the election is lost and the term is winding down — you find out who they actually were the whole time.
Louisiana found out. The rest of the country just watched it happen in real time.
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