Four federally recognized tribes in New Mexico filed a federal lawsuit on May 12, 2026 against the prediction-market platform Kalshi, alleging the company is operating an unauthorized sports betting service on tribal lands in violation of the Indian Gaming Regulatory Act (IGRA) and the state’s tribal-state gaming compacts.
The plaintiffs are the Mescalero Apache Tribe, the Pueblo of Pojoaque, the Pueblo of Sandia, and the Pueblo of Isleta. The complaint was filed in U.S. District Court in Albuquerque, according to reporting by the Albuquerque Journal and Covers.
What the complaint alleges
The tribes argue that Kalshi markets itself as “a federally regulated financial exchange” but in practice allows users in New Mexico to place wagers on outcomes of professional and college sporting events. Three specific allegations stand out from the filing:
- Age violation. Kalshi accepts users aged 18 and over, while New Mexico tribal gaming ordinances require sports bettors to be at least 21.
- No geolocation enforcement. The tribes allege Kalshi failed to implement geolocation technology that would prevent users on tribal lands from accessing the platform’s sports markets.
- Unauthorized gaming. The complaint includes a screenshot of the Kalshi app accepting a wager on a University of New Mexico Lobos game from November 2025 — wagering activity the tribes argue should only be operated by tribal governments under their compacts.
The complaint seeks a court order halting Kalshi’s sports-betting access on tribal lands as well as civil penalties for “willful” ordinance violations.
How New Mexico’s tribal gaming framework works
Unlike most states with legal sports betting, New Mexico has no standalone sports betting statute. The state’s five tribal sportsbooks operate retail-only books on tribal land under the 2015 Class III gaming compacts, which are in effect through 2037. The compacts require the parties to reopen “good-faith negotiations” if any “internet gaming” is authorized in New Mexico — a provision the tribes argue Kalshi’s nationwide platform circumvents entirely.
New Mexico’s 14 tribes and pueblos collectively reported more than $266 million in “adjusted net win” in the fourth quarter of 2025 — the figure that represents gaming revenue net of prize payouts and regulatory fees, per the Albuquerque Journal. A portion of that revenue is shared with the state under the compact terms. The tribes argue that platforms like Kalshi “siphon” revenue away from a system that ultimately funds tribal services and the state’s general fund.
Part of a national pattern
The New Mexico filing is the latest in a wave of lawsuits and enforcement actions challenging prediction-market platforms. Kalshi was already facing more than 20 civil lawsuits as of early 2026. In January 2026, a Massachusetts Superior Court judge issued a preliminary injunction barring Kalshi from offering sports event contracts in that state without a gaming license — a ruling that rejected as “overly broad” Kalshi’s argument that federal CFTC oversight preempts state gambling regulation.
Federal courts in New Jersey and Tennessee have at least temporarily blocked state enforcement against Kalshi, while state courts in Massachusetts and Ohio have sided with state regulators. Industry observers expect the conflict to reach the U.S. Supreme Court.
What it means for New Mexico bettors
For now, nothing changes at the counter. The five legal NM tribal sportsbooks — Santa Ana Star, Isleta + BetMGM, Inn of the Mountain Gods, Buffalo Thunder, and Route 66 — continue to operate retail-only. There is still no legal online or mobile sports betting in New Mexico. We will update this story as the federal case develops.