Bernie Moreno Senate Prediction Market Ban Passes

The Bernie Moreno Senate prediction market ban cleared the chamber without a single dissenting vote on Thursday, putting an immediate end to any possibility of senators or their staff placing bets on platforms like Polymarket or Kalshi while carrying privileged government information. The unanimous passage, achieved through a consent resolution that rewrote the Senate’s standing rules on the spot, landed at an awkward moment for the prediction market industry, one week after a US Army special forces soldier was charged with doing exactly what Congress just banned itself from doing.

How the Bernie Moreno Senate Prediction Market Ban Passed

Republican Senator Bernie Moreno of Ohio brought the resolution to the floor arguing that senators and their aides sit on sensitive, non-public information every single day. Defense briefings. Economic data before it goes public. Diplomatic negotiations that markets would move on in a heartbeat. Letting that information flow into bet-sizing decisions on a prediction market, he said, corrodes the basic trust that voters place in their elected officials.

“Engaging in any way in a prediction market or trying to place bets where we might have inside information deteriorates the confidence that our constituents have in us,” Moreno told the Senate floor. The resolution passed by unanimous consent, no roll call, no debate, no procedural drama. It changed the standing rules of the Senate and took effect the moment the gavel fell.

Moreno framed it plainly: no member, no staffer, no one inside the United States Senate should ever be able to use their position to “monetize this job.” That language matters. It is not a temporary policy or a voluntary pledge. It is now baked into Senate rules, which means breaking it is a rules violation with real institutional consequences, not just bad optics.

By changing the standing rules of the Senate, what we’re doing is allowing our constituents to know, once and for all, that no member of the United States Senate, no member of the staff of the United States Senate, can ever use that inside information as a way to monetize this job whatsoever.

What Triggered the Vote?

A Senate rule change rarely happens in a single afternoon. On April 23, federal prosecutors charged Gannon Ken Van Dyke, a US Army special forces soldier, with using classified information about a raid on former Venezuelan President Nicolas Maduro to place winning bets on Polymarket. Van Dyke allegedly netted over $400,000. He has pleaded not guilty.

That case broke open a conversation that had been building for months. Lawmakers had already been voicing unease about prediction markets in the context of Iran war contract speculation, with concerns that some traders seemed to know things before official announcements. The Van Dyke indictment turned that general unease into something urgent. By the end of the week, the Senate had a resolution on the table.

The timing tells you something about how seriously senators took the optics. They did not wait for a committee hearing or a lengthy debate. They passed a rule change in the same news cycle as the charges. Fast action by legislative standards. And the speed itself was part of the message.

Did Polymarket and Kalshi Support the Senate Ban?

Yes. Both major US prediction market platforms came out publicly in favor of the resolution, and neither one hedged. Kalshi and Polymarket welcomed the Senate insider trading ban almost immediately after the vote. Polymarket posted on X that its terms of service already prohibit the conduct the Senate just banned, calling the rule change “a step forward for the industry.”

Tarek Mansour, co-founder and CEO of Kalshi, went further. He said his platform had already been proactively blocking members of Congress and enforcing against insider trading before the Senate resolution existed. His framing was direct: this is not a burden on prediction markets, it is a legitimacy boost.

That reaction is worth sitting with. Both platforms have been fighting for regulatory acceptance in the United States for years. A Senate rule that explicitly acknowledges prediction markets are real enough to regulate is, in a backward way, a form of validation. The industry does not want to be associated with insider trading. This resolution lets them point to Congressional action and say they supported cleaning the space up.

We must never allow Congress to turn into a casino where members representing the public can gamble on wars, or economic crises, or elections.

What Comes Next for Prediction Market Regulation?

The Senate acted alone on Thursday. The House has not yet passed a matching resolution, though Republican Representative Ashley Hinson posted to X that she planned to introduce one. That resolution, if it passes, would close the same loophole in the lower chamber. Until then, House members are technically free to trade prediction markets, the kind of asymmetry that will keep generating headlines.

Senate Democratic leader Chuck Schumer made clear he sees this as a floor, not a ceiling. “We should go further; this is a good start, but not enough,” he said during the floor debate. His target was broader: he wants the White House and executive branch employees subject to the same rules. “The administration and its employees must apply these very same rules too, particularly this administration, which shows such a troubling affinity to corruption and self-dealing,” Schumer said.

Whether that broader push gains traction is a separate question. But the Senate resolution, however narrow, sets a precedent. Prediction markets are now explicitly in scope for Congressional ethics rules. That is a different regulatory posture than the one that existed 24 hours ago. For an industry that has spent years arguing it deserves to operate freely in the US, being named in a Senate ethics rule is a double-edged development. It signals legitimacy. It also signals that regulators are paying attention.

The Bernie Moreno Senate prediction market ban is a narrow rule. It governs 100 senators and their staff. It does not regulate the platforms themselves, does not ban retail traders, and does not establish new CFTC oversight. But narrow rules have a habit of getting wider over time in Washington, especially when the public finds the underlying behavior as obviously wrong as Schumer’s “no-brainer” framing suggests they do.

This article is for informational purposes only and does not constitute investment advice. Every investment and trading decision involves risk. Readers should conduct their own research before making any financial decisions.