Senate Unanimously Bans Its Members from Trading on Prediction Markets — Effective Immediately

In a rare display of bipartisanship, the U.S. Senate on April 30, 2026, unanimously passed a resolution barring senators, their offices, and staff from trading on prediction-market platforms such as Kalshi and Polymarket. The rule took effect the moment it passed.

The move comes amid mounting scandals that have thrust the fast-growing prediction-market industry into the spotlight and raised fresh questions about insider trading in Washington.

Just eight days earlier, on April 22, Kalshi suspended and fined one Senate candidate and two House candidates after discovering they had placed bets on their own election outcomes — classic insider trading.

The very next day, April 23, U.S. Army Special Forces Master Sgt. Gannon Ken Van Dyke was arrested and indicted for allegedly using classified information to wager nearly $410,000 on Polymarket about a secret American military operation to capture Venezuelan leader Nicolás Maduro.

The scandals proved too much for even the most hands-off senators. “United States senators have no business engaging in speculative activities like prediction markets while collecting a taxpayer-funded paycheck, period,” said Sen. Bernie Moreno (R-Ohio), the resolution’s sponsor.

On the same day the Senate acted, a group of Democratic lawmakers sent a letter to the Commodity Futures Trading Commission (CFTC) urging a far broader crackdown: a rule that would prohibit event contracts on the outcomes of elections, wars, military actions, sports, and government decisions that lack a legitimate economic-hedging purpose.

That wider proposal would gut the core product lines of both Kalshi and Polymarket.

In a savvy public-relations move, the two leading platforms immediately endorsed the Senate’s narrow ban. Kalshi CEO Tarek Mansour praised the resolution, noting that his company already “proactively blocks members of Congress” and enforces against insider trading.

“This is a great step to increase trust in our markets by making it an industry standard,” he said. Polymarket echoed the sentiment, stating that codifying the prohibition into Senate rules was “a step forward for the industry.”

The enthusiasm is hardly surprising. The Senate’s rule affects only a minuscule fraction of overall trading volume on the platforms. By loudly supporting a targeted ethics measure aimed at Congress itself, Kalshi and Polymarket position themselves as responsible players eager to root out bad actors — while the far more threatening Democratic push to ban entire categories of contracts quietly fades into the background.

Crucially, the new Senate rule does not — and legally cannot — apply to the President or the executive branch. Prediction markets will therefore continue to accept wagers from the single most powerful office in the world, ensuring that high-stakes political and geopolitical bets remain very much in play.

The industry’s rapid embrace of the ban reflects a clear strategic calculus. A narrow, symbolic prohibition lets prediction markets claim the moral high ground and defuse immediate political pressure. At the same time, it leaves their core business model — event contracts on everything from election outcomes to military operations — largely intact.

Whether the Senate’s self-imposed restriction will restore public confidence or merely buy time remains to be seen. What is already clear is that the prediction-market boom has reached a regulatory inflection point: the platforms have grown too big and too politically sensitive to ignore, yet too lucrative — and too useful to certain interests — to shut down entirely.

For now, senators are out of the game. Everyone else, including the White House, is still very much allowed to play.

Also read:

• The Simplest AI Prompt Hack: Repeat Yourself for Smarter Responses
• Thriving in the AI Era: The Rise of Artisans and Automators Amid Mediocrity's Fall
• Crowded Skies: Starlink's Orbital Shift to Ease Satellite Congestion

Thank you!