A bipartisan group of lawmakers is escalating pressure on Major League Baseball over its entanglement with sports betting, demanding the league and its players' union prohibit promotional deals that feature athletes encouraging gambling. The move follows a controversy surrounding Philadelphia Phillies superstar Bryce Harper, who recorded a personalized greeting for a high-stakes gambler through the sportsbook FanDuel in November 2024.

Senator Richard Blumenthal of Connecticut, joined by Representatives Paul Tonko of New York and Valerie Foushee of North Carolina, sent a sharply worded letter to MLB and the MLB Players Association. The letter calls for an end to policies that enabled what they describe as a “predatory promotion.” The lawmakers argue that such arrangements exploit vulnerable fans, driving them into debt and addiction.

The incident in question: FanDuel commissioned a Cameo video featuring Harper and sent it to a VIP customer. That bettor subsequently filed a lawsuit against the sportsbook, alleging it took advantage of his gambling disorder. Harper has denied any knowledge of how FanDuel would use the video or the specifics of the customer's betting history. “I didn't know what they were going to do with it,” Harper reportedly stated in earlier comments.

Under the current collective bargaining agreement, MLB players are permitted to enter into promotional deals with betting operators, provided they do not authorize the use of their name, uniform number, image, or likeness to “advertise, promote or encourage betting on (for or against) any baseball game or event.” The letter from Congress contends that this rule is insufficient, as it does not prevent players from indirectly endorsing gambling activity through platforms like Cameo, where personalized messages can be directed at individual bettors.

Notably, the MLB Players Association has expressed interest in relaxing these restrictions during ongoing negotiations for the next collective bargaining agreement, according to sources familiar with the talks. This has raised alarm among lawmakers, who see the potential for even more aggressive promotion of sports betting to fans.

In their letter, Blumenthal, Tonko, and Foushee posed five specific questions to both MLB and the union. They ask for a detailed accounting of all promotional deals with betting operators, the safeguards in place to prevent harm to vulnerable individuals, the process for approving player endorsements, whether any internal reviews have been conducted following the Harper incident, and what steps the league and union plan to take to address the lawmakers' concerns. The deadline for a response is set for August 24.

Major League Baseball and the MLB Players Association both declined to comment when reached by ESPN. The league has previously stated that it takes the integrity of the game seriously and that its rules are designed to prevent any appearance of impropriety. However, the rapid expansion of legal sports betting across the United States since the Supreme Court struck down the federal ban in 2018 has created a complex landscape for professional sports leagues. Many teams and leagues have partnered with sportsbooks, and players have increasingly become part of marketing campaigns.

The Harper case has become a flashpoint in the broader debate over the ethics of sports betting partnerships. Critics argue that when teams and leagues accept millions of dollars from betting operators, they risk normalizing gambling behavior among fans, including those who may be susceptible to addiction. The involvement of star players like Harper, who serve as role models for young fans, amplifies those concerns.

The congressional letter represents a rare direct intervention by federal lawmakers in the business practices of a major sports league. It signals that the issue is gaining political traction, particularly as the league and union prepare to negotiate a new collective bargaining agreement that could expand or restrict player involvement with betting companies. The outcome of that negotiation, and the response to the lawmakers' demands, will likely shape the future of sports betting advertising in baseball.