New York City Council's inquiry into prediction market marketing has increasingly centered on Polymarket, while still encompassing Kalshi, Coinbase and Gemini Titan as the council weighs whether local safeguards are needed and plans a hearing. The focus follows a June 2026 Wall Street Journal investigation that identified 118 videos in which influencers allegedly paid as much as $3,000 a month appeared to show winning Polymarket bets that were fabricated or simulated; equivalent real wagers would have lost about $166,000, and Polymarket said it would audit its promotional content. On June 26, 2026, the National Association of Consumer Advocates sued Polymarket, CEO Shayne Coplan and CMO Matthew Modabber, alleging the undisclosed endorsements violated D.C. consumer protection laws. The company had already settled with the Commodity Futures Trading Commission for $1.4 million in 2022 and agreed to stop serving U.S. users, yet its marketing continued to reach U.S. audiences. The city inquiry remains separate from New York state's litigation against Kalshi, Coinbase and Gemini over gambling law, while New York State Assemblymember Clyde Vanel has proposed restrictions on prediction market activity and federal investigators are separately examining Polymarket over potential insider trading and market integrity issues.