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Federal Government Sues Wisconsin Over Prediction Market Crackdown

Written by Camil Straschnoy Last updated: April 30, 2026 Published: April 30, 2026
federal-government-sues-wisconsin-over-prediction-market-crackdown Pictured: Wisconsin Attorney General Josh Kaul.

The battle for regulatory control over prediction markets reached a new fever pitch this week as the federal government filed a lawsuit against the state of Wisconsin. The legal action, spearheaded by the Commodity Futures Trading Commission (CFTC) and the U.S. Department of Justice (DOJ), seeks to block Wisconsin from enforcing its own state gambling laws against federally regulated trading platforms.

The move comes just days after Wisconsin Attorney General Josh Kaul launched a series of aggressive lawsuits against major industry players — including Kalshi, Polymarket, Robinhood, Coinbase, and Crypto.com — accusing them of facilitating “illegal sports betting” under the guise of financial “event contracts.”

A Clash of Jurisdictions

At the heart of the dispute is a fundamental disagreement over what prediction markets actually are. Wisconsin officials argue that these platforms are effectively digital sportsbooks operating without a license.

“Thinly disguising unlawful conduct doesn’t make it lawful,” said Attorney General Josh Kaul in a statement following the state’s initial filing. “These companies’ alleged facilitation of sports betting in Wisconsin should be shut down.”

However, the CFTC maintains that because these platforms offer event contracts — derivatives that pay out upon the occurrence of a future event — they fall under the exclusive jurisdiction of the federal government under the Commodity Exchange Act (CEA).

“Wisconsin’s attempt to criminalize and shut down federally regulated markets intrudes on the exclusive federal scheme Congress designed to oversee national swaps markets,” the CFTC stated in its complaint filed in the U.S. District Court for the Eastern District of Wisconsin.

The “Fig Leaf” of Event Contracts

Wisconsin’s Department of Justice alleges that prediction markets use a “fig leaf” to bypass state-level gambling restrictions. According to state investigators, the platforms generate massive revenue from sports-related contracts that mirror traditional betting odds.

The state’s complaint highlights Kalshi as an example, alleging that the platform generates over $1 billion in annual revenue, with approximately 90% of that coming from sports-related contracts.

In Wisconsin, sports betting is strictly limited to tribal gaming compacts, where wagers must be processed through servers located on tribal lands. Therefore, these tribal groups stand together in support of the state’s move.

“We stand firmly in support of fair enforcement of Wisconsin law and respect for tribal sovereignty. Any expansion, reinterpretation, or innovation in wagering or gaming-related activities should occur only through lawful processes”, said in a statement Tehassi Hill, Chairman of the Oneida Nation.

A National Legal Chess Match

Wisconsin is not the first state to find itself in the CFTC’s crosshairs. The federal agency has filed similar lawsuits against officials in New York, Arizona, Connecticut, and Illinois this month alone.

The federal government is aiming to prevent a “patchwork” of state regulations that could disrupt a unified national market for financial derivatives. “Our message to Wisconsin is the same as to New York, Arizona, and others: if you interfere with the operation of federal law in regulating financial markets, we will sue you,” said CFTC Chairman Michael Selig.

The outcome of the Wisconsin case could serve as a bellwether for the entire industry. If the federal court sides with the CFTC, it would solidify prediction markets as financial instruments protected from state gambling raids. If Wisconsin prevails, it could embolden other states to shutter platforms that have become increasingly popular for trading on everything from election results to the Super Bowl.