The U.S. Supreme Court is being flooded with requests to step into the fight over sports prediction markets, and the lineup of groups demanding a ruling reads like a who’s-who of American power: the National Football League, 39 states, 145 tribal nations, and the two lawmakers whose names are on the very law at the center of the dispute.
By Raj Patel | October 11, 2026
Last week, a wave of amicus briefs — formal “friend of the court” filings — landed at the Supreme Court in a case that could decide who regulates prediction markets in the United States: the federal government or the states. According to CoinDesk’s State of Crypto newsletter, the filings urge the justices to take up the question of whether sports-based prediction market contracts count as “swaps” under federal commodities law. For anyone who has put money on a prediction market app, the outcome could change what you can bet on, who protects you, and how much it costs.
The Weird Legal Fight Everyone Wants In On
Prediction markets let people buy contracts that pay out based on real-world outcomes — election results, economic data, or sports scores. Platforms like Kalshi argue these are financial instruments, regulated at the federal level by the Commodity Futures Trading Commission (CFTC). State regulators, casinos, and sports leagues counter that a contract on a football game is simply gambling, something states have policed for a century.
The courts are split. According to CoinDesk, two federal appellate courts have ruled that prediction markets touching sports are gambling products that belong under state regulation, while one appellate court — the Third Circuit, by a 2-1 vote — said the CFTC has jurisdiction. When appellate courts disagree like this, it usually falls to the Supreme Court to settle the matter. That is exactly what the new filings are asking for.
The Architects of the Law Turn Against the Regulator
The most striking voices in this fight are the people who wrote the law being argued over. Former Senator Chris Dodd, whose name sits on the 2010 Dodd-Frank Wall Street Reform and Consumer Protection Act, filed a brief saying the law was never meant to hand the CFTC power to override state gambling regulators. His filing argued that parlay-style wagers — bets chaining together point spreads and player performances across different games and sports — do not facilitate hedging or price discovery, the core functions of legitimate derivatives.
Former CFTC and SEC Chair Gary Gensler, who helped write the rules implementing Dodd-Frank, made a similar argument. The law, he told the Court, does not grant the CFTC authority to preempt state gambling laws. When the lawmakers who built the regulatory framework say the regulator is stretching it, justices tend to listen.
The NFL, the States, and the Tribes Line Up
The NFL’s brief takes aim at what the league called the CFTC’s “laissez-faire” approach, highlighting the gap between how states police gambling companies and how the CFTC treats the exchanges — known as designated contract markets — where prediction markets actually trade. Meanwhile, 39 states plus the District of Columbia filed together, as did 145 tribal nations, all pushing the same message: sports betting is our turf, not Washington’s.
The casino industry joined too. The Casino Association of New Jersey and the American Gaming Association filed briefs warning that federally regulated sports contracts threaten a gambling business that states already license, tax, and oversee. For these groups, prediction markets are not a fintech innovation — they are a loophole around state gambling laws.
The CFTC Fires Back With New Rules
While the briefs piled up, the CFTC made its own move. On Friday, October 9, the agency issued an interim final rule — already in effect — plus a separate proposal clarifying its view of what counts as a “swap.” According to CoinDesk, the regulator said casino-style gambling falls outside its definition of a swap, but event contracts stay inside it, and the agency wants to formally classify contracts on sports, politics, cultural events, and even weather as swaps under its umbrella.
Translation for everyday investors: the CFTC is drawing a line where it, not the fifty states, decides the rules for these products. If the Supreme Court ultimately agrees, prediction market platforms get one federal rulebook. If the Court sides with the states, platforms could face a patchwork of fifty different gambling regimes — and sports contracts might disappear from federal exchanges entirely in some states.
What Happens Next — and Why Your Money Cares
The clock is now ticking on Kalshi’s response. According to CoinDesk, the company received an extension from the Supreme Court and now faces a November 9, 2026 deadline to file its reply. After that, the justices decide whether to take the case at all — a decision that could come within weeks. If they decline, the current messy split between appellate courts stands, and the legal gray zone continues.
- For traders — a state-level ruling could shrink the menu of available contracts and push activity to offshore platforms with fewer protections.
- For investors in prediction market platforms — regulatory clarity, either way, is better than the current limbo; ambiguity is what kills valuations.
- For the broader crypto industry — the case tests how far federal regulators can stretch old financial laws over new digital products, a question at the heart of nearly every crypto legal fight today.
The Verdict
This is a rare case where the law’s own authors, the biggest sports league in America, most states, and tribal nations all agree — and they are all pointing the Supreme Court toward the same conclusion. The CFTC’s Friday rulemaking shows the agency intends to defend its ground aggressively. But when Chris Dodd himself says Dodd-Frank does not do what the CFTC claims, the agency’s position gets a lot harder to defend. Watch the November 9 deadline and the Court’s decision on whether to hear the case. That single decision will shape the future of prediction markets in America for years.
The regulatory landscape for prediction markets remains uncertain. This article is for informational purposes only and does not constitute financial or legal advice.
39 states begging scotus after taxing the handle for years is the funniest amicus lineup of the term. zero of them wanted regulation while the revenue flowed
a decade of cashing 8 to 15 percent handle taxes and now they file amicus like guardians of the public. the justices clerks are going to have fun cross referencing those two records side by side
the clerks wont need to dig for the cross reference, the prediction market apps legal teams will hand deliver it in the reply brief. expect that side by side chart as exhibit A
The NFL, 39 states and 145 tribal nations all on the same side of a filing. That coalition does not happen over principle, it happens over handle leaking out of state sportsbooks into these apps.
The Dodd-Frank authors filing amicus briefs is the real flex here. Pretty hard to argue congressional intent when the people who literally wrote the law say sports contracts were not meant to be swaps.
authors filing amicus is a flex but courts weight text over drafters, happened with half of dodd frank already. fun symbolism tho
elena the nfl and 39 states piling in basically forces some narrowing, the question is how much survives after the opinion
hard disagree on the intent argument. the authors can file whatever they want, but statutory text is what the justices parse, and swaps language is broad. wrote a paper on this exact fight in law school
text argument only works if you ignore that the CFTC already let sports contracts ride under it. you cant call everything a swap only when states lose
handlebar statutory text argument is strong until you remember the court reads text selectively when industries are this young. kalshi vibes all over again
the broad swaps text argument cuts both ways tho. if you read Section 1a(47) literally then half of what the CFTC already approved fits too, and the justices know it. congress wrote a definition no one can administer
if 1a(47) really swallows sports contracts then half the CFTCs own prior approvals look arbitrary too. either the definition has limits or the agencys record does, cant be neither
That is the point people miss. If the definition gets narrowed just for sports, the CFTC earlier approvals do not become arbitrary, they become the boundary. Courts drawing that line once is still better than 39 states each drawing their own.
statutory text beats legislative intent in this court, usually. broad swaps language is a real problem for kalshi, handle coalition or not
text beats intent until the text torches the cftc’s own approval record, then suddenly old-school deference looks real attractive to the agency crowd. watch for that switch at oral args
If the justices take the case and call these contracts swaps, the CFTC wins and every state regulator loses overnight. Same apps, different rules, and bettors get federal protections they never had. Fees probably rise to pay for it.
Tobias is right about the handle. Kalshi style apps already pulled billions in volume from sportsbooks, and every state that taxed that handle at 8-15 percent sees the leak in real time.
39 states, the NFL and the dodd frank authors all filing and the punchline is congress could patch 1a(47) with a one line amendment tomorrow. they wont, everyone prefers the fight
Exactly. The one-line fix has been sitting there the whole time, but nobody in Congress wants to touch gambling-adjacent wording, so we get dozens of amicus briefs instead of a single sentence.
betting apps pulling billions from sportsbooks while 39 states beg scotus for help. should have regulated instead of taxing the handle and looking away
taxing the handle was the easy revenue grab, regulating costs political capital. states chose the paycheck, now they beg scotus lol
and the tribal nations file separately because their exclusivity contracts are worth more than any principled legal argument. everyone here is protecting revenue
counterpoint marta, regulating first meant actually litigating against the apps with no federal hook. the paycheck kept the lights on while they waited for a scotus opening, it was cowardice with a revenue stream
Wild to see tribal nations, the NFL and the Dodd-Frank authors on the same side of anything. Whatever the Court does with cert, the real question is whether state regulators actually get enforcement teeth or just another forum to keep losing in.
Everyone keeps arguing intent vs text while ignoring that Section 1a(47) was drafted so broadly nobody can administer it. Whichever way this lands, the real loser is the definition itself.