Why the NFL Wants Prediction Markets Regulated as State Gambling

The NFL wants the U.S. Supreme Court to let states regulate sports prediction markets as gambling. In an October 8, 2026 amicus brief, the league backed New Jersey's request for review in its case against Kalshi and argued that sports event contracts are not the financial “swaps” Congress placed under exclusive federal oversight.

The filing matters beyond one platform. It asks who should set the rules for a fast-growing sports market: the Commodity Futures Trading Commission, state gaming regulators, or some combination of both. It also identifies the specific contracts and safeguards that worry the league most.

What case is the NFL asking the Supreme Court to hear?

The case is Flaherty v. KalshiEX, LLC, docket 26-299. New Jersey officials asked the Supreme Court to review a Third Circuit decision that treated Kalshi's sports event contracts as swaps traded on a designated contract market and therefore within the CFTC's exclusive jurisdiction.

Other federal appeals courts have reached a different result. The NFL brief points to decisions from the Sixth and Ninth Circuits concluding that Kalshi's sports event contracts do not satisfy the statutory definition of a swap. That circuit split is one reason the NFL says Supreme Court review is needed.

The Court has not agreed to hear the case. As of November 3, Kalshi's response deadline has been extended to December 7, 2026. The justices will decide later whether to grant review. A docket entry is not a ruling on the merits.

For the broader legal background, see our state and federal guide to prediction-market legality.

Why does the NFL call sports contracts gambling?

The NFL's legal argument focuses on the meaning of “swap” in the Commodity Exchange Act and Dodd-Frank. Kalshi argues that event contracts traded on a CFTC-regulated exchange fall within the federal derivatives framework. The NFL says the term should be read in its historical context: derivatives hedge or price pre-existing risk, while a sports wager creates risk for the purpose of gambling.

That distinction determines regulatory power. If sports contracts are federally regulated swaps, state gambling laws may be preempted when the contracts trade on a designated contract market. If they are not swaps, states may apply licensing, age, consumer-protection, and sports-integrity rules.

The NFL believes the Sixth and Ninth Circuits took the correct approach. Kalshi and supporters of federal jurisdiction disagree. The Supreme Court petition asks the justices to resolve that conflict; it has not yet selected a winner.

The integrity rules the NFL says are missing

The brief does more than make a jurisdictional claim. It lists four categories of contracts that the league considers especially dangerous:

1. Markets one person can manipulate. Examples include whether a kicker misses a field goal or whether a broadcast mentions a subject.
2. Markets involving injuries, safety, or misconduct. The NFL calls these inherently objectionable because they can create incentives around harm.
3. Markets tied to officiating. Penalty timing or type can depend on discretionary calls by officials.
4. Events knowable in advance. A first-play call, lineup decision, or similar event may be known by a small group before the public.

The league says state-regulated sportsbook partners follow a prohibited-wager list designed around these risks. It argues that the CFTC and prediction exchanges have not adopted an equivalent ban across all four categories.

This is more specific than saying prediction markets are risky in general. The NFL is targeting contracts where one actor can change the outcome, where the subject is harmful, or where insiders can know the result before ordinary traders.

Why prohibited-trader lists matter

The NFL also argues that a rule against insider trading is not enough unless the operator can identify insiders. League employees, team staff, players, coaches, officials, and medical personnel may hold nonpublic information.

According to the brief, an exchange needs a current, league-specific prohibited-bettor list to block those people effectively. The NFL says nominal policies become difficult to enforce if operators do not coordinate with the league on who is covered.

Kalshi has pointed to its compliance systems and has said it sought collaboration with the NFL. Reporting by the Associated Press included Kalshi's position that it had tried to work with the league without receiving a response. That dispute is important: the NFL brief presents the league's argument, not an uncontested factual finding by the Court.

Age limits and regulatory capacity

The league highlights two other differences between the federal exchange model and state-regulated sportsbooks.

First, most state sports-betting systems use a minimum age of 21. The NFL says the CFTC framework can allow adults who are 18 to trade sports event contracts. The league argues that equivalent products should not have sharply different age limits.

Second, the NFL questions whether the CFTC has enough staff and review time to monitor a rapidly expanding contract catalog. The brief contrasts the CFTC's broad national derivatives mandate with state agencies dedicated to gambling oversight. It also criticizes self-certification rules that can allow a contract to begin trading quickly.

These are policy claims made by the NFL. They do not prove that state regulation is always stronger or that federal surveillance cannot work. They do show why the league sees jurisdiction as a practical integrity issue rather than a technical fight between agencies.

Why the $1.8 billion figure matters

The NFL told the Court that NFL-related prediction markets accounted for $1.8 billion of trading volume on the first Sunday of the 2026 season. The Associated Press reported that total prediction-market volume that day was $3.3 billion.

That figure explains the urgency behind the filing. Football is not a small corner of the category. If NFL events drive more than half of trading on a major day, the rules for those contracts affect a large retail audience and a meaningful share of platform activity.

Volume is not the same as revenue, profit, or money lost by users. It is the value traded. Still, it shows why exchanges, leagues, regulators, and states all have a strong interest in the outcome.

What the NFL wants states to control

State gambling regulation typically covers more than a license. Depending on the state, it can include:

• minimum-age rules;
• approved and prohibited wager types;
• operator suitability and financial requirements;
• responsible-gambling controls;
• league and regulator information sharing;
• suspicious-wager reporting;
• enforcement against unlicensed products;
• local tax and consumer-dispute systems.

The NFL argues that these systems have been built in direct cooperation with sports leagues. It wants prediction exchanges offering equivalent sports products to operate under comparable safeguards.

Kalshi's opposing position is that a patchwork of state rules cannot override a national market regulated under federal commodities law. The CFTC has also defended federal jurisdiction in related litigation. Our report on the CFTC's New York case explains that side of the conflict.

What happens if the Supreme Court takes the case?

If the Court grants review, it could clarify whether sports event contracts on CFTC-designated exchanges are swaps and whether federal law blocks states from applying gambling rules. A ruling for New Jersey could expose exchanges to state-by-state licensing and product restrictions. A ruling for Kalshi could strengthen exclusive federal authority over exchange-traded sports contracts.

The Court could also decide the case narrowly. It may focus on statutory language, the specific Third Circuit judgment, or procedural questions rather than designing a complete national framework. Congress and the CFTC would still be able to change the rules within their authority.

If the Court denies review, it would not endorse either side. It would leave the existing appellate split and regional uncertainty in place. Other cases could return the question later.

What fans and traders should watch next

Four events will move the story:

• December 7: the current deadline for Kalshi's response on the Supreme Court docket;
• the Court's conference and order list: where the justices may grant or deny review;
• new federal or state rules: especially age limits, prohibited markets, and insider controls;
• exchange product changes: whether operators remove the four market types criticized by the NFL.

Readers should distinguish legal status from platform safety. A regulated exchange can still offer contracts with market, liquidity, or settlement risk. Our updated Is Kalshi Legit? fact check separates those questions.

The bottom line

The NFL wants state gambling regulators to oversee sports prediction markets because it believes their rules provide stronger, league-tested controls for age, insiders, prohibited wagers, and game integrity. Its Supreme Court brief argues that sports event contracts create gambling risk rather than hedge financial risk and therefore should not be treated as federally preemptive swaps.

That is the NFL's position, not yet the law nationwide. The Supreme Court has not agreed to hear the case, Kalshi has until December 7 to respond, and the legal split remains open. The concrete question to track is whether exchanges adopt equivalent safeguards even before the justices decide who has final authority.

Sources

• U.S. Supreme Court docket 26-299
• NFL amicus brief in Flaherty v. KalshiEX
• Associated Press: NFL urges Supreme Court review

Fact-checked November 3, 2026. This article is informational and is not legal, financial, or gambling advice.