The Michigan Gaming Control Board (MGCB) regulates Detroit's commercial casinos, tribal gaming compacts, online casino and sports betting launched in January 2021, and fantasy contests, licensing operators and suppliers, certifying platforms and games, and publishing monthly revenue reports. It has been among the more active state regulators in enforcement against unlicensed offshore operators, sweepstakes casinos and prediction markets, issuing cease-and-desist orders and pursuing payment intermediaries.
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Polymarket US has become the fourth prediction market to stand down on sports in Michigan, under a stipulation approved in the federal court that refused it an injunction in June. It is conceding a state where its appeal sits before the circuit that has already ruled against Kalshi, while it carries its fight to Ohio and Louisiana.
Football lifted sportsbook handle by 48% to 65% on August in all three states, and revenue recovered from August's low. Against September 2025 the picture splits: Michigan and Pennsylvania revenue rose sharply on better results, New Jersey's fell 14.3%, and only Michigan took more bets than a year earlier.
The Nevada Gaming Control Board wants the National Council on Problem Gambling's name taken out of the regulation that tells every casino what helpline information to post, and its chair tied the change to the council's $2 million arrangement with Kalshi. Staff put it more neutrally: Nevada players should be pointed to Nevada resources.
The Michigan Gaming Control Board has written to 33 unlicensed casino, sweepstakes-style and sports betting sites, and this time it led with a player-protection argument: the state's self-exclusion database binds only licensed operators. Two of the names were already on the list it published in April.
Coinbase will stop offering sports event contracts in Michigan, Kalshi's included, and close its customers' open positions at the same deadline, under an order a federal judge signed on 23 September. Michigan has promised not to prosecute while the appeals run; nobody has conceded the law.
Families and Friends of Gamblers, a Boston nonprofit built by the tobacco litigator Richard Daynard's institute, has named a 10-member board it says has no connection to gambling interests and is recruiting from the problem gambling councils around the National Council on Problem Gambling. It is a rival pitch rather than a split inside the council, timed for a moment when the NCPG has no permanent leader in sight.
The National Council on Problem Gambling has given no reason for Maurer's departure, which follows its director of programs out of the door and four state bodies out of its membership since it took $2 million from Kalshi in May. The board has started its second executive search in 20 months.
A concrete recycler's tower beside I-94 has been painted Polymarket blue and lettered with the platform's name. The city says adverts on water towers need a permit, there is none on file, and its buildings department is sending an inspector out with a "possible correction order". The stunt lands in the one state where Polymarket has already lost in federal court and its rival Kalshi is under a state injunction.
The Ohio Casino Control Commission's June resignation letter surfaced at a Massachusetts Gaming Commission meeting last week, where commissioners decided to stay "for now". The national problem-gambling body says taking Kalshi's money is not an endorsement. Three state bodies have decided it is.
The company says it does not believe the contracts break state law, and it has stopped offering them in Michigan anyway. In exchange the state has agreed not to enforce its sports betting laws against Robinhood while the appeals run. Its broader prediction markets hub stays open.
The temporary order we reported in July carried $120,000 a day. The preliminary injunction that replaced it on 1 September carries more than four times that, and tells Kalshi which geolocation vendor category it must use.
The Nevada Council on Problem Gambling is set to terminate its affiliate membership with the National Council on Problem Gambling this month, citing a fundamental disagreement over the NCPG's two-year partnership with Kalshi. Michigan's gaming regulator has already walked, and other state councils are said to be weighing the same step.
An Ingham County judge has granted a 14-day temporary restraining order barring prediction-market operator Kalshi from offering sports event contracts to anyone in Michigan, with noncompliance carrying a penalty of $120,000 per day. It is the latest state to treat the federally registered exchange as an unlicensed sportsbook.
Michigan’s online gambling revenue in April 2025 narrowly missed setting a new monthly record, demonstrating robust year-on-year growth primarily driven by