CFTC Sues Wisconsin Over Control of Prediction Markets
The CFTC filed suit April 28 against Wisconsin, challenging state regulation of prediction market platforms.
Why it matters: Prediction markets are rising in popularity and attracting state crackdowns. Legal professionals at platforms, law firms, and in-house teams must now navigate overlapping state-federal oversight and evolving regulatory risks.
- CFTC sued Wisconsin after the state targeted five major prediction market platforms.
- Wisconsin alleges companies operated illegal gambling disguised as 'event contracts.'
- The CFTC seeks a ruling affirming its sole authority over event contracts in federal law.
- Similar CFTC suits are pending against New York, Arizona, Connecticut, and Illinois.
The Commodity Futures Trading Commission (CFTC) escalated a national jurisdictional fight by filing a lawsuit against Wisconsin on April 28, 2026. The move follows Wisconsin’s legal actions targeting five platforms—Kalshi, Polymarket, Crypto.com, Robinhood, and Coinbase—accused of running illegal gambling schemes under state law by offering 'event contracts' resembling sports bets.
- Wisconsin’s attorney general, Joshua Kaul, argues that rebranding gambling as 'event contracts' does not excuse platforms from obeying state law. "Thinly disguising unlawful conduct doesn’t make it lawful," Kaul said, calling to shut down these alleged activities. (coverage).
- The CFTC countered by seeking a declaratory judgment to block Wisconsin from enforcing its gambling laws directly against federally regulated exchanges. Chairman Michael S. Selig said, "States cannot circumvent the clear directive of Congress... if you interfere with the operation of federal law... we will sue you." (release).
- This is not an isolated action—the CFTC has launched similar suits against New York, Arizona, Connecticut, and Illinois, signaling a broad crackdown on state interference in federal regulation of prediction markets.
- Platforms like Kalshi and Polymarket let users trade on outcomes of real-world events, from elections to sports, and are regulated federally as designated contract markets under the Commodity Exchange Act (CFTC guide).
With the sector’s rapid growth, the outcome of this lawsuit will impact how prediction markets operate and are supervised nationwide. Legal teams advising exchanges or investing in event contract products face a complex patchwork of enforcement and preemption issues that remain unresolved in the courts.
By the numbers:
- April 28, 2026 — Date of CFTC lawsuit against Wisconsin
- 5 — Number of prediction market platforms targeted by Wisconsin's lawsuits
- 5 — States, including Wisconsin, sued by CFTC for prediction market jurisdiction