On March 3, 2026, Michigan Attorney General Dana Nessel filed a high-profile lawsuit against Kalshi, a New York-based prediction market platform, accusing the company of illegally offering online sports betting to Michigan residents without the required state license. The case, filed in Ingham County Circuit Court, thrusts the debate over the regulation of prediction markets and online gambling into the spotlight, pitting state authorities against federal regulators and raising questions about consumer protection, legal oversight, and the future of online wagering in the United States.
Kalshi, founded in 2021, operates as a prediction market—essentially an online platform where users buy and sell contracts based on the outcome of real-world events. These events range from weather forecasts and political races to, most notably, sporting outcomes. Customers can wager on whether it will rain in Los Angeles tomorrow, who will win the NBA championship, or even if the nation will go to war. Contracts are priced between one cent and 99 cents, reflecting the probability of an event’s occurrence in the eyes of the market, and payouts depend on the actual outcome.
But it’s the sports-related contracts—accounting for roughly 90% of Kalshi’s trading volume—that have drawn the ire of Michigan officials. According to the complaint, Kalshi’s activities amount to unlicensed sports betting, a violation of Michigan’s Lawful Sports Betting Act. The Act, which took effect in December 2019 and paved the way for legal online sports betting in January 2021, requires that any platform offering internet sports betting in Michigan be licensed through the Michigan Gaming Control Board (MGCB). Only state-licensed casinos and federally authorized tribal casinos are eligible to apply for such a license.
"Corporations cannot circumvent state gaming laws," Nessel declared in a statement, as reported by multiple outlets including CBS News Detroit and FOX 47 News. "My office will hold those who sidestep Michigan's consumer protections accountable and ensure that betting in our state remains lawful, fair and subject to the oversight our residents expect and deserve."
The lawsuit seeks a permanent injunction to prohibit Kalshi from advertising or conducting its sports betting operations in Michigan. Nessel’s office argues that by offering its prediction market to Michigan residents, Kalshi induces users to believe its operations are legal, when in fact, according to the state, they are not. The complaint is explicit: "Kalshi operates a so-called prediction market through which residents of the State of Michigan can engage in unlicensed gambling under the guise of trading event contracts. This market is an online trading platform through which users may wager on the likelihood of a sports-related occurrence."
Beyond the licensing issue, the complaint raises concerns about consumer protection and responsible gambling. Nessel’s office asserts that Kalshi lacks the responsible gambling features mandated for licensed operators, and that it operates without any oversight from the MGCB regarding the effectiveness of its safeguards. This, the lawsuit argues, exposes Michigan residents to a greater risk of gambling addiction, with few regulatory checks in place.
Some users echo these concerns. Nazir Scott, a Kalshi user, told FOX 47 News, "I know a lot of people that are underage that use Kalshi. Like people that are under 21, and technically that's not 'legal gambling.' They can still use it. I think it should probably be banned, if I'm being honest." Such testimony underscores the potential for regulatory gaps in online platforms that operate outside traditional state frameworks.
Kalshi has not responded to requests for comment from several news organizations, including CBS News Detroit and FOX 47 News. However, the company has previously maintained that it is not a gambling platform but rather a trading platform, a stance it took in a lawsuit against the New York State Gaming Commission after facing similar scrutiny there.
Michigan is not alone in challenging Kalshi’s business model. Nevada’s Gaming Control Board issued a cease and desist order against the company a year ago, and a judge later ruled in favor of the board, allowing state laws to be enforced against Kalshi. In September 2025, Massachusetts Attorney General Andrea Campbell also sued Kalshi, alleging violations of state wagering laws. The legal landscape for prediction markets is, in a word, unsettled.
Adding another layer of complexity is the role of the Commodity Futures Trading Commission (CFTC), the federal agency responsible for overseeing derivatives and certain types of market speculation. Michael Selig, appointed as chair of the CFTC by President Trump, has been vocal in asserting the commission’s exclusive jurisdiction over platforms like Kalshi. In an op-ed in The Wall Street Journal, Selig wrote, "The CFTC will no longer sit idly by while overzealous state governments undermine the agency’s exclusive jurisdiction over these markets by seeking to establish statewide prohibitions on these exciting products." He reiterated this position during a CNBC Digital Finance Forum, saying, "Prediction markets aren’t new and the definition of commodity is extraordinarily broad. We’ve got a lot of authority over these markets."
This federal-state clash is not just academic. If the CFTC’s position prevails, platforms like Kalshi could operate across state lines, even where state gambling laws would otherwise prohibit them. State officials, meanwhile, argue that local consumer protections, licensing requirements, and responsible gambling standards are critical—and that companies cannot simply sidestep them by rebranding gambling as trading.
The Michigan complaint goes further, alleging that Kalshi’s operations mirror traditional gambling in both form and function. The lawsuit describes how the company expanded its offerings in August and September 2025 to include wager types similar to those found in sportsbooks, such as football spreads, over/under bets, and proposition bets. The complaint contends that Kalshi acts as the "house" in a closed-loop wagering system, creating the games, handling bets, and paying winners, while using behavioral design mechanisms to encourage impulsive engagement and excessive risk-taking.
Under Michigan law, gambling is defined as an activity involving chance, prize, and consideration. The state’s lawsuit argues that Kalshi’s contracts meet all these criteria, and that the company is simply using creative language to sidestep regulatory requirements. The case seeks a court order declaring Kalshi’s operation a common law nuisance and a permanent injunction to halt its activities in Michigan.
As the legal battle unfolds, the outcome could set a precedent for how prediction markets are regulated across the country. Will federal oversight trump state authority, or will states like Michigan retain the right to enforce their own consumer protections? For now, the future of online prediction markets—and the boundaries between trading and gambling—remains uncertain, with Michigan’s lawsuit against Kalshi at the center of the storm.
For Michigan residents, the case is more than just a legal tussle; it’s about ensuring that the rules of the game are fair, transparent, and enforced—no matter what you call the bet.