Timeline: Minnesota Prediction Market Ban Brings Immediate Federal Lawsuit

Key Highlights

Minnesota’s move to ban prediction markets has quickly triggered a high-stakes legal and political fight over who should regulate the fast-growing industry. The state argues the platforms resemble unlicensed gambling operations, while federal regulators and market operators insist they fall under commodities law rather than state betting rules.

Here is a current timeline of the events:

May 13: Minnesota Passes Prediction Market Ban

Minnesota became the first state to ban prediction markets tied to elections, sports, weather, and other public events, arguing that the platforms operate as unlicensed gambling products while avoiding state gaming laws.

The new law, which takes effect in August, would force platforms like Kalshi and Polymarket out of the state and impose felony charges on the operators if they refused.

May 19 – Morning: Bill Signed into Law

Gov. Tim Walz signed the new law on May 19, prohibiting the creation, operation, and advertising of prediction market trading that involves public event outcomes. The ban also applies to services that facilitate access to prediction markets, including virtual private networks that users could employ to mask their location and bypass the restrictions.

State officials argued the law is necessary to preserve Minnesota’s authority over gambling regulation and consumer protections. Lawmakers also raised concerns about speculative betting behavior expanding outside traditional sportsbook oversight.

May 19 – Afternoon: CFTC Files Suit Against Minnesota

Within hours of the signing, the Trump administration’s Commodity Futures Trading Commission (CFTC) filed a federal lawsuit seeking to block enforcement of the law.

The agency argued Minnesota’s ban conflicts with the Commodity Exchange Act, which gives the federal government authority over derivatives and event-contract trading markets. According to the complaint, federally regulated exchanges offering prediction contracts fall under exclusive CFTC jurisdiction rather than state gambling regulators.

The lawsuit immediately transformed the dispute from a state-level policy fight into a national legal battle over federal oversight.

The Core Dispute: Gambling or Financial Markets?

The legal clash involves an ongoing nationwide debate about whether prediction markets should be treated as gambling platforms or federally regulated financial products.

Critics argue that prediction markets function similarly to sportsbooks while bypassing licensing rules, taxes, and consumer protections imposed on traditional betting operators.

Prediction market operators and supporters counter that platforms like Kalshi and Polymarket are useful for information-discovery purposes. Some businesses use weather and other commodity-related event contracts to manage financial risk exposure, which supporters say places the products firmly within commodities regulation.

For example, the agricultural sector has long relied on weather futures to hedge against storms and other conditions that can damage crops. Following opposition from agricultural industry stakeholders, Minnesota lawmakers drafted an updated version of the prediction market bill that still permits weather-related trading. Walz is expected to sign the revised measure in the near future.

What Happens Next?

The case could become one of the most significant legal tests for the US prediction market industry.

If federal courts side with the CFTC, states may face major limits on their ability to regulate or ban federally approved event contracts. If Minnesota prevails, other states could follow with similar restrictions targeting Kalshi, Polymarket, and comparable platforms.

The outcome may also influence future regulation surrounding election markets, sports-event trading, and speculative contracts that have rapidly expanded across the US over the last two years.