Hearings to examine tracking prediction markets' exponential growth, focusing on tribal implications and beyond

Digital Assets and Bank RegulationSenate Indian Affairs · 2026-08-04 · 119th Congress
The Senate Indian Affairs Committee convened this roundtable to examine the rapid growth of prediction markets — platforms offering event contracts on sports and other outcomes — and their implications for tribal gaming revenue, sovereignty, and consumer protection. Begins at 0:18:36
Transcript
Highlights

Title

Prediction markets, sports betting, and tribal gaming law and revenue

Purpose

The Senate Indian Affairs Committee convened this roundtable to examine the rapid growth of prediction markets — platforms offering event contracts on sports and other outcomes — and their implications for tribal gaming revenue, sovereignty, and consumer protection. Tribal leaders, a state solicitor general, and a gambling-addiction recovery advocate discussed whether these products constitute unregulated sports betting that bypasses the Indian Gaming Regulatory Act (IGRA) and state gaming compacts, and what Congress and the CFTC should do about it. Begins at0:18:36

Who spoke

Chair Lisa Murkowski (R-AK)0:18:36: Opened by noting she was "asleep at the switch" on prediction markets0:19:25, cited 5 million-plus monthly active users on one platform0:19:51 and $46.2 billion in FY2025 tribal gaming revenue at stake0:22:18; later pressed witnesses on whether IGA has data on revenue impacts1:04:42 and on a possible D5-section loophole in Agriculture Committee CLARITY Act language1:33:46.

Sen. Brian Schatz (D-HI), Vice Chairman0:23:35: Quoted a Ninth Circuit judge saying prediction markets "look like gambling"0:23:59, argued they are a workaround of IGRA that could "eviscerate" tribal budgets0:25:25, and asked witnesses for the one thing Congress should do in the short run1:06:38.

Sen. John Boozman (R-AR)0:27:02: Welcomed the panel and later cautioned against attaching prediction-market fixes to the Farm Bill, calling that a conflation of unrelated issues1:14:17, while voicing sympathy for the tribal case1:15:20.

A committee member (from a gaming state)0:27:15: Said tribes want to preserve their existing right to regulate gaming rather than see it displaced by the CFTC0:27:46.

Tehassi Hill, Vice Chairman, Indian Gaming Association / Chairman, Oneida Nation0:29:20: Said tribes invest $450 million a year and employ 6,000 regulators overseeing gaming0:30:35, that Indian gaming generated 682,000 jobs in 20250:30:08, and urged passage of S.4160, the Prediction Markets Are Gambling Act0:33:37; later noted prediction-market growth of over 2000% year-over-year versus 4-5% tribal gaming growth1:09:50.

Mark Macarro, President, NCAI / Tribal Chair, Pechanga Band0:34:26: Argued Congress never intended CFTC to preempt IGRA, citing 2010 Dodd-Frank colloquy between Sens. Lincoln and Feinstein0:36:40 and Sen. Chris Dodd's recent statement that lawmakers had no intention of making CFTC a "national gambling regulator"0:38:15; noted $1.5 billion wagered on the Super Bowl through Kalshi alone0:37:53 and estimated at least a 5% tribal gaming revenue hit in California1:10:27.

Jamie Hummingbird, Chairman, National Tribal Gaming Commissioners and Regulators0:43:24: Said Nevada's Gaming Control Board accepted FanDuel's and DraftKings' withdrawal of sports-wagering license applications amid prediction-market pursuits0:46:07; said there are no repercussions if a company like Kalshi violates consumer protections, unlike tribal operators who can lose licenses1:23:36; described 15-year-olds opening accounts to wager using a parent's debit card1:22:24.

Mathura Sridharan, Solicitor General, State of Ohio0:50:59: Said Ohio has led a 44-state coalition responding to CFTC's proposed rulemaking0:51:41, argued gambling markets need a different regulator than commercial derivatives markets0:53:36, and recommended Congress clarify by statute that sports wagers are not a Commodity Exchange Act instrument0:56:31.

Dr. Harry Levant, Director of Gambling Policy, Public Health Advocacy Institute0:57:41: Described his own gambling addiction, 2015 guilty plea to 13 financial felonies, and a suicide attempt0:58:06; said six of his recovery-group clients returned to gambling via prediction markets in three months1:03:13; called for minimum federal safety standards under Congress's plenary authority1:03:39, and urged Congress to put sports league commissioners under oath over data-selling deals, citing the Mets' new prediction-market contract1:08:16.

Sen. Tina Smith (D-MN) [0:52:52 correction—0:08:52 error]: (see below)

Sen. Tina Smith (D-MN)0:08:44: Cited AGA data estimating roughly $1 billion in lost state and tribal gaming revenue1:09:15; proposed clarifying via the CLARITY Act or Farm Bill that the CFTC does not preempt IGRA or tribal-state compacts1:10:59.

Sen. Catherine Cortez Masto (D-NV)1:15:21: Asked whether market-structure legislation for cryptocurrency could open a loophole for prediction markets1:15:54; pressed on what happens if Kalshi violates the rules versus a tribal casino, drawing out that there is currently no repercussion for Kalshi1:23:33; noted Nevada courts have temporarily banned Kalshi as indistinguishable from traditional sports betting1:20:06.

A committee member (follow-up questioner)1:33:18: Pressed on the "D5" exemption language in the Agriculture Committee's bill, asking whether it would create a gambling loophole absent clarifying language, and got agreement from witnesses that it would1:34:19.

Nathan, Agriculture Committee staff1:44:18: Said the language used in the Ag portion tracks the House CLARITY Act text and is intended to be limited to spot markets, offering to share it with committee staff1:44:41.

Key moments

Murkowski said tribal gaming generated a record $46.2 billion in gross gaming revenue in FY2025 and an estimated $110 billion in broader U.S. economic output0:22:18.

Hill said prediction markets have "manipulated a weak regulatory agency" to offer nationwide online sports gambling to those as young as 18 without age verification or problem-gambling safeguards0:29:410:31:59.

Macarro cited $1.5 billion wagered on the Super Bowl through Kalshi's platform alone this year, and quoted Dodd-Frank author Sen. Chris Dodd stating Congress had no intention of turning CFTC into a national gambling regulator0:37:530:38:15.

Hummingbird testified Nevada's Gaming Control Board accepted FanDuel's surrender of approvals and DraftKings' withdrawal of pending sports-wagering applications amid their prediction-market pursuits0:46:07.

Dr. Levant disclosed his 2015 guilty plea to 13 financial felonies tied to gambling addiction and a suicide attempt the night of his court appearance, and said six recovery-group clients relapsed via prediction markets in the last three months0:58:061:03:13.

Cortez Masto established that tribal casinos can lose their licenses for regulatory violations while Kalshi currently faces "none"1:23:181:23:36.

Hill said prediction-market volume grew over 2000% year-over-year, compared with 4-5% growth in tribal gaming revenue1:09:50.

Macarro cautioned that aggregate tribal gaming revenue reports mask declines at existing facilities because new tribal casinos opening each year inflate the totals, and proposed same-facility year-over-year comparisons instead1:29:07.

Murkowski and a colleague scrutinized "D5" exemption language in the Agriculture Committee's bill draft, with witnesses agreeing it could create a loophole allowing prediction markets and other unregulated gambling nationwide absent clarifying language1:34:191:36:49.

Sridharan said 44 states, including Ohio, have filed briefs and CFTC comments arguing prediction-market sports contracts are gambling subject to state authority under Murphy v. NCAA0:51:410:52:05.

Metadata

CommitteeSenate Indian Affairs
Chamber / CongressSenate · 119th Congress
Date2026-08-04
TypeOpen Hearing
Witnesses
(none listed in event metadata)
Videosenate-isvp
Transcript230 caption blocks · 11,822 words · 1:45:49 runtime
EventCongress.gov 338697