Polymarket Faces Manipulation Allegations as US Congress Weighs Prediction Market Ban

Bubblemaps investigators have uncovered suspicious trading patterns on Polymarket, identifying 80 bets that achieved a 98% win rate, a feat described as statistically impossible. Following these findings, the U.S. Congress is considering a ban on crypto prediction markets due to heightened national security concerns. The investigation suggests that such platforms could be vulnerable to manipulation or illicit interference.

These regulatory pressures emerge as decentralized betting platforms face increasing scrutiny from the CFTC, which has proposed stricter rules for event-based contracts. Per market data, regulated competitors like Kalshi and PredictIt operate under different frameworks, leaving Polymarket exposed to unique legal challenges. Legal experts cited in recent reports suggest that a 98% success rate is a primary indicator of potential insider trading within the ecosystem.

Traders are closely watching for legislative updates from Washington that could impact liquidity across decentralized finance protocols. Key catalysts include upcoming central bank communications, such as the Fed Williams speech scheduled for May 14, 2026, according to the economic calendar. While specific token prices for the platform are not listed, the broader crypto market remains sensitive to regulatory headlines that could redefine the legality of prediction markets.