
TL;DR — Tehassi Hill testified before the Senate Committee on Indian Affairs that prediction markets offering sports and casino wagering operate outside IGRA, threatening tribal revenues, consumer protections, and sovereignty. The panel called for advancing S. 4160 and preserving IGRA in the CLARITY Act. Tribes are compiling impact data but rely on voluntary operator sharing.
SCCG Take — This unified testimony signals a structural shift requiring Congress to affirm IGRA primacy, protecting client-partners’ regulated operations from unregulated market expansion.
IGA Vice Chairman Tehassi Hill appeared before the U.S. Senate Committee on Indian Affairs during a bipartisan roundtable examining prediction markets’ growth and effects on tribal governments. Hosted by Committee Chairman Sen. Lisa Murkowski and Vice Chairman Sen. Brian Schatz, the session featured a panel delivering a consistent position: sports and casino-style wagering on these platforms bypasses long-established tribal and state regulatory systems.
Hill, who also serves as Chairman of the Oneida Nation, joined Mark Macarro, Jamie Hummingbird, Mathura Sridharan, and Dr. Harry Levant. The group warned that such operations threaten tribal governmental revenues, consumer protections, and sovereignty. Hill stated that Indian Country supports responsible innovation and legitimate financial markets but opposes prediction markets used to offer sports and casino-style gambling outside the framework established by Congress under the Indian Gaming Regulatory Act.
Hill explained that tribal governments have spent more than four decades building a comprehensive gaming regulatory system. Tribal governments invest more than $450 million annually in gaming regulation and employ more than 6,000 gaming regulators. He acknowledged the Indian Gaming Association is compiling national data on prediction markets’ effects on tribal sportsbooks, noting that proprietary gaming data must be voluntarily shared by operators. Collaborative research among Wisconsin tribes illustrates ongoing efforts to develop reliable impact information. This data gap represents a limitation in fully quantifying current economic effects on tribal gaming.
The panel reinforced complementary views. Macarro emphasized that Congress never intended the Commodity Exchange Act to supersede the Indian Gaming Regulatory Act. Hummingbird detailed tribal commissions’ safeguards through licensing, auditing, responsible gaming, and compact enforcement. Sridharan noted gambling regulation has historically belonged to states to protect public health and consumers. Dr. Levant warned of increased access for young adults and vulnerable individuals without regulated protections. As detailed in reporting by Indian Gaming, Indian Gaming Association Chairman David Z. Bean praised Hill for representing tribal governments with clarity and highlighted the united recognition of risks.
Hill urged immediate legislative steps, including advancing the Prediction Markets Are Gambling Act (S. 4160), ensuring the CLARITY Act preserves the full authority of the Indian Gaming Regulatory Act and tribal-state gaming compacts, and preventing the Commodity Futures Trading Commission from expanding sports and casino-style gambling through prediction markets. These recommendations focus on closing federal loopholes that have emerged around existing law.
Client-partners in tribal gaming should track how this testimony influences the CLARITY Act’s final language. The roundtable marks a point of convergence where tribal, state, and public health perspectives align on the need to maintain distinct gaming regulatory authority.
Reporting: Indian Gaming
We've worked with tribal gaming partners for decades, and IGRA has been the bedrock of regulated tribal gaming. Prediction markets offering sports and casino wagering outside that framework don't just threaten tribal revenue—they undermine consumer protection, compliance infrastructure, and the sovereignty tribes spent 40 years building. This isn't a side issue; it's existential for tribal operations.
SCCG angle: SCCG has partnered with tribal nations and operators across every regulated market. We help clients navigate tribal compacts, market entry, and regulatory alignment—especially critical now as prediction market ambiguity creates risk. Our network includes tribal leadership, state regulators, and compliant operators who need clarity and strategy as this plays out in Congress.