US Senator Requests Major Leagues to Disclose Gambling Partnerships

(AsiaGameHub) –   US Senator Richard Blumenthal, known for his significant legislative efforts concerning prediction markets and related areas, has formally written to all major sports leagues in the United States. He is requesting a comprehensive report detailing their existing collaborations with gambling companies.

Senator Asks Major Sports League to Provide Info on Gambling Partnerships 

The letters were sent to the commissioners of the NFL, NBA, MLB, NHL, MLS, and NCAA, with a deadline of May 1, 2026, for them to submit the requested information. Senator Blumenthal believes that a more in-depth examination of the current relationships between major sports organizations and entities involved in gambling is necessary.

“Since the federal ban on sports gambling — a ban supported by the leagues — was overturned eight years ago, gambling has permeated every aspect of the game. The consequences of this rampant rise of sports gambling have been accelerating addiction, threats to players, and even the corruption of the game.”

This is not the senator’s sole concern; he has also been a prominent critic of the expansion of prediction market platforms like Kalshi and Polymarket, particularly their use of event contracts related to sports, which some federal judges have classified as “swaps.”

The senator has explicitly stated that prediction markets are attempting to circumvent state gambling regulations and avoid the same level of oversight that traditional sportsbooks face.

Previously, Senator Blumenthal championed new legislation aimed at strengthening the regulation of prediction markets due to concerns about this developing sector. The Senator highlighted that prediction markets have been undermining the integrity of sports, as well as other real-world events.

Senator Blumenthal is Highly Critical of Prediction Markets, Too

This issue is currently being debated in the nation’s courts, where Kalshi has seen favorable rulings in New Jersey and Arizona, though it has encountered further opposition in states such as Massachusetts and Nevada.

Blumenthal has also voiced strong criticism regarding the nature of sports betting and event trading, arguing that fans are no longer primarily supporting their favorite teams but are instead focused on financial gains, describing this trend as “pervasive.”

Among the sports leagues contacted, the NCAA has consistently opposed gambling partnerships and has expressed reservations about sports wagers, such as proposition bets, on college-level competitions.