Share 
Gaming Edge’s TL;DR
- The US Senate has unanimously passed a bill banning senators and their staff from trading on prediction markets such as Kalshi and Polymarket.
- This immediate rule change aims to stop insider trading and restore public confidence in prediction market integrity.
- The move follows recent enforcement actions and federal charges tied to politically sensitive contracts, and it has been welcomed by major platforms.
The U.S. Senate voted unanimously to prohibit members and Senate staff from participating in prediction markets, with the rule taking effect immediately.
The push follows incidents in which Kalshi disciplined and fined three US politicians for trading on election-related markets. Also, the Justice Department recently charged a serving US soldier for allegedly using inside information to profit from the capture of former Venezuelan President Nicolás Maduro.
Sponsor Sen. Bernie Moreno warned that such trading “deteriorates our confidence” in representatives, while Senate Minority Leader Chuck Schumer said Congress must not become a place to “gamble on wars or economic crises or elections.” Co-sponsor Senator John Curtis said the Senate’s action is a first step toward broader prohibitions on government officials using insider information to wager.
Further limits could be on horizon
The direct effect is limited – the ban targets lawmakers and Senate staff, not the general public – but it signals stronger ethics oversight around markets tied to political and national security events.
Operators like Kalshi and Polymarket publicly supported the resolution. Kalshi CEO Tarek Mansour said the move helps build trust and matches Kalshi’s proactive blocking of members of Congress, while Polymarket offered its full support and willingness to cooperate.
Expect platforms to formalize identity and activity checks, tighten insider trading controls, and update terms of service to reflect regulatory shifts.
Senators signaled possible further steps. Co-sponsor John Curtis suggested expanding prohibitions to all government officials. Platforms will likely codify and publicize stricter compliance measures, and regulators or exchanges may pursue clearer enforcement frameworks. Meanwhile, active DOJ cases and platform enforcement actions will shape how broadly these rules are applied and whether Congress or federal agencies pursue additional legislation or guidance.
Based on reporting by Jonny Whitfield for InterGameOnline.
