Native American tribes are accusing prediction-market operator Kalshi of undercutting tribal casino revenues, bringing a new front to a fast-growing — and increasingly scrutinized — corner of crypto-linked markets.
What happened
- In December 2025 Kalshi sued the Connecticut Department of Consumer Protection after the regulator warned it faced “imminent criminal and civil penalties” for offering event contracts to Connecticut residents.
- Shortly before that suit, Connecticut issued cease-and-desist orders directing Kalshi, Robinhood, and Crypto.com to stop offering what the state called “unlicensed” sports event contracts to Connecticut users and to enable withdrawals.
- Kalshi’s lawsuit did not name tribal parties, but the Indian Gaming Association and 16 federally recognized Connecticut tribes filed an amicus brief arguing Kalshi’s business model has “siphon[ed] gaming revenues away from tribes over such tribes’ objections,” claiming the firm acts “as if Congress gave it permission to enter Indian lands” to do so.
Why tribes are intervening
- The amicus brief frames the dispute as more than a state regulatory fight: it’s about tribal sovereignty and gaming revenues. The Connecticut filing echoes a July 2025 lawsuit by several California tribes — including Blue Lake Rancheria, Chicken Ranch Rancheria of Me-Wuk Indians, and Picayune Rancheria of the Chukchansi Indians — which sued Kalshi over similar claims.
- Both the Connecticut brief and the California suit argue that prediction-market companies (Kalshi, Polymarket and others) cannot lawfully offer sports-linked contracts to users on tribal lands without running afoul of the Indian Gaming Regulatory Act (IGRA), which governs gaming activities on Native American reservations.
Industry backdrop
- Prediction markets have surged in volume over the past year: a Dune Analytics dashboard tracked about $6 billion in notional volume in a single recent week.
- Kalshi’s profile has risen alongside the sector. In 2025 the company reportedly raised $1 billion in a funding round that pushed its valuation to about $11 billion. Polymarket — Kalshi’s main competitor — saw its valuation jump to roughly $9 billion after a $2 billion investment from Intercontinental Exchange (parent of the NYSE).
Why this matters for crypto and gaming
- The disputes highlight regulatory and legal fault lines for crypto-native prediction platforms: state-level gambling enforcement, tribal gaming law, and federal statutes such as IGRA all intersect, creating a complex compliance landscape.
- Court rulings could determine whether prediction markets can offer sports-linked contracts to residents on tribal lands, affect whether states can treat certain event contracts as illegal gambling, and shape how platforms structure access and geofencing.
- For investors and market participants, legal outcomes will influence valuations and growth prospects for major players operating at the intersection of crypto, betting, and prediction markets.
What to watch next
- How courts interpret the scope of IGRA and whether tribal claims can block or limit Kalshi’s offerings on tribal lands.
- State enforcement trends: will other states follow Connecticut’s cease-and-desist approach?
- How Kalshi, Polymarket and rivals adjust product access, licensing, or geoblocking to navigate legal pressure — and how those changes affect trading volumes and valuations.
Bottom line: a booming prediction-market sector now faces high-stakes legal tests over tribal gaming rights and state gambling rules. The outcomes could reshape the business model for crypto-backed event contracts and determine where and how these platforms can operate.
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