The US Senate unanimously passed a resolution on May 1, 2026, prohibiting all members and staff from using prediction markets, effective immediately. The ban follows charges against a special forces soldier for allegedly using classified information to place bets on Polymarket regarding a covert operation against Nicolás Maduro. Senator Bernie Moreno, who introduced the resolution, framed the measure as essential to preserve public trust in government.

Insider Trading Fears Trigger Congressional Action

The resolution emerged directly from a classified information breach. On April 23, 2026, federal authorities charged a special forces soldier with using sensitive government intelligence to bet on Polymarket’s outcome market for the Maduro capture operation. The case exposed a critical vulnerability: officials with access to non-public information could exploit prediction markets for personal gain before events became public knowledge. Moreno stated that such behavior “deteriorates the confidence that our constituents have in us.” The Senate moved swiftly to close the loophole through standing rule changes, preventing members and staff from ever using “inside information as a way to monetize this job.”

Unanimous Senate Vote Signals Bipartisan Concern

The resolution passed with unanimous support, an unusual alignment in a divided chamber. Senate Democratic leader Chuck Schumer called the measure a “no-brainer” but signaled frustration with its scope. “We must never allow Congress to turn into a casino where members representing the public can gamble on wars, or economic crises, or elections,” Schumer said. He emphasized the ban is “a good start, but not enough,” explicitly calling for the executive branch and administration employees to face identical restrictions. The House plans to introduce a companion resolution, though no timeline has been announced. Prediction market platforms Polymarket and Kalshi now face heightened regulatory scrutiny as lawmakers debate broader restrictions on government participation.

Enforcement Gaps Remain Unresolved

The Senate resolution lacks critical implementation details. Specific penalties for violations, enforcement mechanisms, and compliance oversight procedures remain unspecified. The special forces soldier’s case—which triggered the legislative response—has not reached resolution or plea status. Schumer’s public frustration that the Senate action alone is insufficient suggests further legislative action may follow, potentially extending restrictions beyond Congress to executive branch personnel with access to classified information.