Ingham County Circuit Court Judge Rosemarie E. Aquilina on September 1 issued a preliminary injunction requiring prediction market platform Kalshi to keep sports-event contracts unavailable to Michigan residents, tightening restrictions in place since a June temporary restraining order and remaining in force until final judgment. Violations carry a $500,000-per-day penalty, up from $120,000 under the earlier order. Kalshi may not offer, post, list, execute, or settle sports contracts for persons in Michigan, including moneyline, parlay, over-under, in-game, and proposition contracts and functionally equivalent products, and must route users through a third-party geolocation provider authorized by the Michigan Gaming Control Board. Attorney General Dana Nessel announced the 30th Judicial Circuit order and said it protects residents from predatory, unlicensed practices after Michigan sued in March under the Michigan Lawful Sports Betting Act. Kalshi, which faces legal challenges from more than a dozen states, has said the Commodity Futures Trading Commission earlier directed it to keep its federally regulated market open after the firm began unwinding Michigan users’ sports positions, leaving it in what it called an impossible position between state and federal mandates. A company spokesperson said Kalshi disagrees with Michigan, will fight the case in court, and is complying with the court-imposed restrictions. On the same day, New Jersey petitioned the U.S. Supreme Court for a writ of certiorari in its case against Kalshi, a step that could clarify whether the CFTC or state authorities govern prediction markets. Analysts say the Court may take up the dispute given widespread litigation, while Congress could also act; Senators Adam Schiff and John Curtis in March introduced a bill to bar CFTC-registered platforms from listing event contracts that resemble sports bets or casino-style games. The Michigan injunction does not resolve the merits of the broader jurisdictional fight.