Controversy over US sports betting laws

Last Updated on November 9, 2025 by author

In the years since the Supreme Court’s landmark 2018 decision to strike down the federal ban on sports betting, the United States has witnessed a dramatic transformation in how Americans engage with one of their oldest pastimes. What was once largely confined to shadowy backrooms and offshore betting sites has exploded into a mainstream activity, with advertisements for sportsbooks dominating commercial breaks during games and betting kiosks appearing in local restaurants. Yet this rapid expansion has ignited a complex web of controversies that touch upon consumer protection, sports integrity, state revenues, and social responsibility.

The American Gaming Association reports that a record-breaking $3.87 billion was wagered in the first few months of 2025 alone. As the industry continues its rapid growth, states, sports leagues, and society at large are grappling with the consequences of this newfound accessibility to sports betting. This article examines the multifaceted controversy surrounding U.S. sports betting laws, exploring the historical context, current landscape, and the pressing questions that policymakers and the public face in this new era of legalized gambling.

From Prohibition to Prosperity: The Historical Context of Sports Betting in America

To understand the current controversies surrounding sports betting, one must first appreciate its long and complicated history in the United States. Games of chance arrived with the first settlers of the British-American colonies, with attitudes toward gambling varying significantly between communities. While colonies with strong religious traditions like the Puritans in Massachusetts generally frowned upon gambling, other regions embraced it—Virginia’s wealthy landowners used gambling on horse races to cement their social status during the 1680s.

The 19th century saw gambling become intertwined with American frontier culture, with nearly everyone participating in games of chance in towns like Deadwood and Dodge City. However, a wave of religious revivalism during the Second and Third Great Awakenings brought increased hostility toward gambling, leading to more restrictive state laws. The early 20th century witnessed several pivotal moments that would shape gambling’s perception for decades, most notably the 1919 Black Sox scandal where members of the Chicago White Sox conspired to fix the World Series.

The modern era of sports betting regulation began in 1992 with the passage of the Professional and Amateur Sports Protection Act (PASPA), which effectively banned sports betting nationwide with exceptions for a few states. For 26 years, this federal law limited legal sports betting primarily to Nevada, though illegal operations continued to flourish. The turning point came in 2018 when the Supreme Court declared PASPA unconstitutional in Murphy v. NCAA, arguing that the law violated states’ rights by commandeering their regulatory power. This decision returned the authority to legalize sports betting to individual states, setting off a rapid transformation of the American gambling landscape.

The Current Legal Landscape: A Patchwork of Regulations

Six years after the Supreme Court’s decision, the United States has developed a fragmented approach to sports betting regulation, with states adopting dramatically different policies. As of 2025, 39 states, along with Washington D.C., have legalized sports betting in some form. Missouri is set to become the 39th state with legal sports betting after voters passed an amendment in 2024, with implementation targeted for summer 2025.

This state-by-state approach has resulted in significant variations in how sports betting is implemented and regulated across the country:

Diverse Approaches to Legalization

The majority of states that have legalized sports betting offer both online (mobile) and in-person (retail) betting options, but several limit wagering to physical locations like casinos or sportsbooks. The remaining 11 states continue to prohibit sports betting entirely, with some like Utah maintaining strong prohibitions against all forms of gambling.

The table below illustrates the varying approaches states have taken toward sports betting legalization:

This patchwork regulatory framework creates significant challenges, particularly when it comes to cross-border betting and consistent consumer protections. Residents in states where sports betting remains illegal may turn to unregulated offshore sportsbooks or illegal bookies, which pose serious risks including non-payment of winnings, data breaches, fraud, and a complete lack of responsible gaming tools.

The Integrity Controversy: Gambling’s Threat to Sports Authenticity

One of the most significant controversies in the sports betting debate centers on how legalized wagering impacts the integrity of sporting events. Sports leagues that once vehemently opposed gambling now partner with betting companies, but this relationship has created inherent tensions and serious ethical concerns.

Proliferation of Betting Scandals

Since the widespread legalization of sports betting beginning in 2018, numerous high-profile gambling scandals have emerged across professional and amateur sports:

• NBA: In April 2024, the NBA banned Jontay Porter for life after an investigation found he disclosed confidential health information to bettors and intentionally exited a game to influence prop bets. Most recently, in October 2025, Portland Trail Blazers coach Chauncey Billups and Miami Heat guard Terry Rozier were arrested as part of a federal investigation into illegal betting activities, with Rozier allegedly exiting a game purposely so a co-conspirator could win a bet.
• NFL: The league suspended multiple players for betting violations, including Calvin Ridley (2022) for betting on NFL games while away from his team, and several Detroit Lions and other team players (2023) for betting on NFL and non-NFL games.
• MLB: The league banned San Diego Padres player Tucupita Marcano for life in June 2024 after he placed bets on the Pittsburgh Pirates while a member of that team.
• NCAA: In 2023, both Iowa and Iowa State announced investigations into dozens of athletes across multiple sports for violating NCAA betting rules.

These incidents reveal the corrosive potential of gambling on sports integrity, particularly as betting becomes more normalized and accessible. The introduction of prop bets (wagers on specific events within a game rather than the final outcome) creates particularly vulnerable points for manipulation, as individual player performances can be more easily influenced than overall game results.

The Dangers of Insider Information

As sports betting markets become more sophisticated, the risk of insider information influencing bets grows substantially. Team personnel, players, coaches, and officials typically have access to non-public information that could advantage bettors—such as injury reports, strategic decisions, or player conditions. All major sports leagues have implemented strict rules prohibiting betting by insiders, but as recent scandals demonstrate, these rules are not always sufficient.

The challenge is compounded by the sheer volume of people who now have some connection to professional and college sports programs, making comprehensive monitoring and enforcement increasingly difficult.

The Addiction Debate: Balancing Access With Consumer Protection

The rapid expansion of legal sports betting has raised serious concerns about problem gambling and addiction. The easy accessibility of mobile betting apps means that individuals can place wagers 24/7 from virtually anywhere, potentially exacerbating addictive behaviors.

The Personal and Social Costs of Problem Gambling

Problem gambling carries significant personal and financial consequences for affected individuals and their families, including debt, bankruptcy, relationship breakdown, and mental health issues. Research has consistently shown that the proximity and availability of gambling opportunities correlate with increased rates of gambling disorders.

While sports betting operators and states highlight their responsible gaming initiatives—such as self-exclusion programs, deposit limits, and educational resources—critics argue these measures are often overshadowed by aggressive marketing tactics that encourage excessive betting. The widespread advertising of sportsbooks during actual game broadcasts, often featuring celebrity endorsements and promotional offers like “risk-free bets,” creates an environment where gambling is presented as harmless entertainment rather than a potentially risky activity with serious consequences.

The Regulatory Response

States have implemented various safeguards to address problem gambling, with differing approaches to:

• Age restrictions: Most states set the minimum age for sports betting at 21, though some allow it at 18.
• Advertising limitations: A few states have restricted certain types of promotional content or betting advertisements.
• Self-exclusion programs: All legal markets offer some form of self-exclusion, though the effectiveness varies.
• Resources for treatment: Some states dedicate portions of betting tax revenue to problem gambling treatment programs.

Massachusetts has even considered legislation dubbed the “Bettor Health Act” that would raise the tax on online sports betting to 51% specifically to address “economic, health, and social harms caused by sports betting” and would implement additional protections like banning prop bets and setting daily betting limits.

The Economic Equation: Revenue Generation vs. Consumer Protection

One of the primary drivers behind the rapid legalization of sports betting across states is the promise of significant tax revenue. However, the balance between maximizing state income and protecting consumers has become a central point of controversy in regulatory discussions.

State Tax Strategies and Their Implications

Virtually all states that have legalized sports betting impose taxes on the industry, but the tax structures and rates vary significantly. Most state taxes are applied to the gross gaming revenue (GGR) of sportsbooks—the total amount wagered minus winnings paid out—while some implement additional fees or taxes per wager.

The tax rates range dramatically, from Nevada’s relatively low 6.75% tax on sports betting revenue to New York’s 51% tax on online sports betting revenue, which is one of the highest rates in the country. Tennessee takes a different approach entirely, imposing a 1.85% tax on the total amount wagered (handle) rather than on revenue.

These differing approaches create tension in the industry. Higher tax rates provide more state revenue but can lead to less favorable odds and fewer promotional offers for consumers as operators pass on costs. Some experts speculate that excessively high tax rates could make regulated markets less competitive compared to illegal offshore operators, potentially driving bettors back to unregulated platforms.

The 2025 Tax Hike Trend

Several states are actively considering or have recently implemented sports betting tax increases, indicating a shift toward viewing the industry as a significant revenue source:

• Illinois: Starting July 1, 2025, Illinois implemented an additional per-wager tax of 25-50 cents on sportsbooks, prompting major operators like FanDuel to add a 50-cent transaction fee on every online wager placed in the state.
• Maryland: Effective July 1, 2025, Maryland increased its mobile sports betting tax from 15% to 20%.
• Louisiana: Passed legislation to increase sports gambling tax from 15% to 21.5%, with one-fourth of the increase supporting college athletes at public universities.
• New Jersey: Governor Phil Murphy proposed almost doubling the state tax from 13% to 25% to address projected budget deficits and fund programs for older adults and those with disabilities.

These tax increases represent a significant evolution in how states view sports betting—from a prohibited activity to a lucrative source of government revenue. However, this creates inherent tension between states’ financial interests and their responsibility to protect citizens from potential harm.

The Future of Sports Betting Regulation: Emerging Challenges and Considerations

As the sports betting industry continues to evolve, new controversies and regulatory challenges are emerging that will shape its future development.

The Federal vs. State Debate

One ongoing controversy centers on whether the current state-by-state approach to sports betting regulation should be replaced by a federal framework. Proponents of federal regulation argue it would create consistency across state lines, simplify enforcement, and establish uniform consumer protections. Opponents maintain that states are better positioned to respond to local preferences and needs, citing the principle of states’ rights that was central to the Supreme Court’s 2018 decision.

The current approach has resulted in significant regulatory fragmentation, creating complications for multi-state operators, sports leagues, and consumers who travel across state lines. However, with deeply entrenched attitudes toward gambling varying dramatically by region, a comprehensive federal solution appears unlikely in the immediate future.

College Athletics and Amateurism

The intersection of sports betting and college athletics presents particularly complex challenges. The NCAA has long maintained strict rules against athletes and staff engaging in sports betting, citing concerns about integrity and the vulnerability of student-athletes. The 2023 gambling probe at Iowa and Iowa State that involved dozens of athletes across multiple sports illustrates the scale of this issue.

Additionally, the potential recognition of college athletes as employees—currently being considered in multiple legal contexts—could further complicate the relationship between college sports and gambling. If athletes were deemed employees, they might gain additional protections but also face different obligations regarding gambling activities.

Technological Innovations and New Risks

Emerging technologies are creating new frontiers—and new controversies—in sports betting:

• In-play betting: The ability to wager on events during a game rather than just the outcome creates more engaging betting experiences but also increases the potential for addictive behavior.
• Data analytics: The use of advanced data and artificial intelligence in setting lines and identifying suspicious betting patterns offers improved integrity monitoring but raises privacy concerns.
• Virtual sports betting: Wagering on simulated rather than actual sporting events presents novel regulatory challenges regarding fairness and transparency.

Conclusion

The controversy over U.S. sports betting laws reflects broader tensions between personal freedom and public health, state autonomy and federal oversight, economic opportunity and social responsibility. The rapid expansion of legal sports betting since 2018 has generated significant tax revenue for states and created a more regulated environment than previously existed in the black market, but it has also introduced serious challenges related to addiction, integrity, and consumer protection.

As the industry continues to evolve, stakeholders including policymakers, sports leagues, operators, and the public will need to grapple with fundamental questions about the appropriate role of gambling in American society. The ongoing controversies surrounding sports betting laws ultimately revolve around a central question: How can we balance the evident economic benefits and consumer demand for legal sports betting with the necessary protections to minimize harm to individuals and preserve the integrity of sports?

The answer to this question will likely continue to evolve as more states consider legalization and regulators gain more experience with this newly legitimized industry. What remains clear is that the debate over sports betting laws will continue to be a high-stakes wager with implications extending far beyond the world of sports.