CFTC Sues Wisconsin Over State Action Against Prediction Markets

The Commodity Futures Trading Commission said on April 28 that it has sued Wisconsin after the state filed civil actions against Kalshi, Polymarket, Crypto.com, Robinhood, and Coinbase over prediction-market activity. In its press release, the CFTC said those firms operate in a market area where Congress gave the federal regulator exclusive authority over event contracts traded on designated contract markets.

The agency framed the case as another preemption fight, not a narrow dispute about one platform. The CFTC said Wisconsin is trying to use state gambling law against products that fall under federal derivatives regulation. Chairman Michael S. Selig said states cannot override the legal framework Congress created for these markets.

Why it matters

For traders, the immediate issue is legal certainty. If states can challenge CFTC-regulated event contracts one by one, access to listed prediction markets becomes harder to predict and platforms may become more cautious about what they offer. That can affect liquidity, product availability, and how quickly new contract types reach the market.

What to watch next

Watch whether federal courts continue backing the CFTC’s view that event contracts belong under exclusive federal oversight. Traders should also watch whether other states keep pressing similar cases, because that will shape how stable the U.S. prediction-market landscape looks in the second half of 2026.