# Oneida Nation of Wisconsin

**Type:** Federally recognized tribe  
**Gaming:** Class III gaming compact with Wisconsin  
**Legal Status:** Sovereign nation with IGRA-protected gaming exclusivity  

## Overview

The Oneida Nation of Wisconsin is a federally recognized tribe with Class III gaming compact granting exclusivity over specific gaming activities in Wisconsin under the Indian Gaming Regulatory Act (IGRA).

## Prediction Market Litigation

On April 25, 2026, the Oneida Nation became the first tribal gaming entity to join as co-plaintiff (not just amicus) in state prediction market enforcement action. Joined Wisconsin Attorney General Josh Kaul in lawsuit against Kalshi, Polymarket, Robinhood, Coinbase, and Crypto.com.

### Legal Theory

Prediction markets offering sports event contracts allegedly infringe on Class III gaming compact exclusivity protected under IGRA. This creates federal law enforcement pathway independent of state gambling classification arguments.

## Timeline

- **2026-04-25** — Joined as co-plaintiff in Wisconsin AG prediction market enforcement action