Full Breakdown
Senate Bans Members from Trading on Prediction Markets
5/1/2026, 3:31:34 PM
Legislative Action: Senate Bars Members from Prediction Market Trades
On April 30, 2026, the Senate unanimously amended its standing rules to prohibit senators from entering contracts whose payoff depends on specific events, effectively banning all prediction-market trading by members. The amendment took effect immediately and passed by voice vote, with no senator objecting.
Background, Insider-Trading Concerns, and Key Actors
Lawmakers warned of insider trading on Kalshi and Polymarket. Kalshi reported on April 22 it suspended and fined one Senate candidate and two House candidates for using campaign data. On April 23, Master Sgt. Gannon Ken Van Dyke was indicted for allegedly providing classified information to bet on a Polymarket contract about Venezuelan leader Nicolás Maduro. Senator Bernie Moreno (OH) introduced the resolution; Rep. Greg Casar (D-TX) and Sen. Chris Murphy (D-CT) endorsed it, and Kalshi CEO Tarek Mansour praised the move.
Timeline of Key Developments
- Mar 17, 2026 – Casar and Murphy discuss ethics at Capitol.
- Apr 22, 2026 – Kalshi fines three political candidates for insider trading.
- Apr 23, 2026 – Sgt. Gannon Ken Van Dyke arrested on classified-information betting.
- Apr 29, 2026 – Sen. Moreno files resolution.
- Apr 30, 2026 – Senate adopts amendment via voice vote.
Data, Enforcement Actions, and Market Impact
Kalshi’s action targeted three political candidates; the Justice Department charged one Special Forces soldier. The voice-vote amendment left no individual voting record, obscuring prior Senate involvement. Supporters argue the ban removes a conflict of interest, aligns congressional conduct with platform bans, and aims to restore public confidence.
Official Statements, Senate Request, and Next Steps
Senator Moreno called the rule a safeguard against “side-hustle” behavior that betrays trust. Kalshi CEO Tarek Mansour said the Senate’s action validates its ban on congressional traders and boosts market credibility. The resolution urges the House, the executive branch, and the judiciary to adopt comparable bans, as lawmakers draft new prediction-market regulations.
Conflicting Reports & Gaps
Public records do not disclose how many senators previously traded on prediction markets, and the voice-vote adoption means no roll-call record exists to identify any dissent.
Verbatim Quotes
- “Serving in Congress is an honor, not a side hustle,” — Bernie Moreno, R-Ohio, X post
- “Americans deserve to know that their leaders are here for the right reason!” — Bernie Moreno, X post
- “Any Senator who comes to Washington, D.C. to cash in, play the markets, or treat public office like a side hustle is a betrayal to the people they swore to serve,” — Bernie Moreno, news release
- “If you’re here to enrich yourself instead of fight for the American people, this a clear abuse of power and you have no business holding public office.” — Bernie Moreno, news release
- “I applaud the Senate for passing this resolution to ban Senators and their offices from trading on prediction markets.” — Tarek Mansour, CEO of Kalshi, X post
