Michigan-Kalshi World Cup fight could reach Supreme Court, experts say
Legal experts say litigation between Michigan and Kalshi could reach the Supreme Court. Michigan has accused Kalshi of violating the state's Lawful Sports Betting Act by allegedly offering unlicensed sports event contracts. At a Thursday Sixth Circuit hearing, one judge appeared ready to rule against Kalshi's effort to avoid state gambling laws. The court's ruling will determine whether Kalshi's sports event contracts can operate without violating state-level prohibitions. Multiple states are challenging whether the CFTC-regulated platform's contracts constitute gambling or legitimate financial instruments.
A Sixth Circuit loss would force Kalshi to geofence Michigan and invite copycat suits from every state with similar gambling statutes. The platform already faces conflicting orders: Michigan courts demand it stop trading, while the CFTC requires continued operation. Traders holding contracts they bought as federally backed face sudden voiding risk where state judges rule.
Polymarket holds identical CFTC registration and faces identical exposure; each state playbook tested on Kalshi previews its own defenses. The Second Circuit appeal on New York preemption is where both platforms bet on restoring a single federal shield. That court may not rule before additional states act. Kalshi's mounting state losses compress the response window and turn patchwork survival into core strategy.