TLDR The Indian Gaming Association held its 2026 Summer Legislative Summit in Washington this week. Tribal leaders are asking Congress to amend the CLARITY Act to block sports and casino-style betting on prediction markets. IGA Chairman David Z. Bean called prediction markets one of the biggest threats to tribal gaming in decades. California tribes are still targeting 2028 for a tribally led online sports betting ballot initiative. Tribes say prediction markets have already cost them up to five percent of gaming revenue, and some have filed lawsuits against platforms like Kalshi and Robinhood.
Tribal leaders from across the country gathered in Washington this week for the Indian Gaming Association’s 2026 Summer Legislative Summit.
The two-day event brought tribal representatives face to face with senators and congressional staff. Their main goal was to protect tribal gaming from the rise of prediction market platforms.
These platforms let users bet on outcomes like sports results or election results. Tribal leaders argue this is gambling in disguise, and it falls outside the rules that govern casino and sports betting.
Push for Changes to the CLARITY Act
The centerpiece of the summit was a request to amend the CLARITY Act. Tribal leaders want language added that would ban sports and casino-style betting through prediction markets.
They also want the law to state clearly that tribal, state, and federal gaming rules stay in place. Without that language, leaders say prediction markets could grow without any real oversight.
IGA Chairman David Z. Bean said the issue has united tribes across the country. He called it one of the biggest threats tribal government gaming has faced in a generation.
Bean said the summit builds on more than a year of outreach to lawmakers. He said some senators already support the tribes’ position, while others are