What to Know
- The CFTC filed in the Southern District of New York seeking a permanent injunction against state enforcement
- New York earlier this week sued Coinbase and Gemini, claiming their event contracts violate state gambling rules
- A coalition of 37 states and Washington, D.C. filed an amicus brief backing Massachusetts in its case against Kalshi
- A Nevada judge this month extended a ban stopping Kalshi from offering event-based contracts statewide
The CFTC sues New York prediction markets case landed in federal court Friday, with the federal regulator asking a judge to stop the state from applying gambling laws to platforms like Kalshi, Coinbase, and Gemini. The fight is no longer subtle. Federal regulators want one rulebook. State attorneys general want forty-eight. Somebody has to lose, and the loser shapes how Americans bet on elections, sports, and everything in between for the next decade.
Why CFTC Sues New York Prediction Markets Filing Lands This Week
The complaint hit the docket in the US District Court for the Southern District of New York. The agency wants a declaratory judgment. It also wants a permanent injunction. Both would block the state from going after federally registered exchanges over event contracts.
Read the CFTC press release on the New York filing and the legal theory becomes clear. The agency argues federal law gives it exclusive jurisdiction over event-based contracts. Anything a state does to limit those products, the filing says, runs straight into the supremacy clause.
CFTC Chair Michael Selig did not soften the language. He framed the suit as a defense of registered exchanges that have, in his words, faced an onslaught of state lawsuits. The agency is no longer waiting for states to back off. It is suing first.
CFTC-registered exchanges have faced an onslaught of state lawsuits seeking to limit Americans’ access to event contracts and undermine the CFTC’s sole regulatory jurisdiction over prediction markets.
New York Sues Coinbase and Gemini Days Before Federal Pushback
Days before the federal complaint, Attorney General Letitia James opened a second front. Her office filed suits against Coinbase and Gemini, claiming the exchanges ran what amounted to illegal gambling operations through their prediction market offerings. The timing matters. The state moved first. The CFTC answered.
The full text of the New York sues Coinbase and Gemini complaint accuses both firms of letting New Yorkers bet on outcomes ranging from sports games to political contests without a state gambling license. James has been clear about her position. If it walks like a casino, she wants it licensed like one.
Coinbase and Gemini have not yet filed formal responses to the state suit. Both have publicly leaned on the same argument the CFTC is now making in federal court. Their event contracts, they say, are swaps. Swaps are regulated by the CFTC. End of discussion.
- Coinbase named in a state suit alongside Gemini earlier this week
- Kalshi previously ordered to halt parts of its sports-related contracts in New York
- Federal complaint seeks to preempt all three actions in one shot
What Is a Prediction Market Under Federal Law?
A prediction market is a platform where users buy and sell contracts tied to the outcome of real-world events. Federal law treats these as event contracts under the Commodity Exchange Act. The CFTC argues this places them firmly inside its exclusive jurisdiction, well outside the reach of state gambling regulators.
37 States Amicus Brief Kalshi Filing Sets the Counterweight
On the same Friday the federal suit dropped, a coalition of state attorneys general did the opposite. The 37 states amicus brief Kalshi coalition lined up behind Massachusetts in its case against the prediction platform. The brief asks Massachusetts’ highest court to reject Kalshi’s argument that federal law lets it offer sports betting nationwide without state licensing.
Their case rests on legislative history. The 2010 financial law Kalshi cites, they argue, was never written to legalize sports betting. It was never meant to override state authority over gambling. Read the brief and the underlying message is straightforward. Congress did not quietly preempt every state casino regulator while writing a derivatives bill.
There is a practical layer too. State laws handle licensing. They handle age limits. They handle fraud prevention and gambling addiction programs. None of those areas show up in federal financial regulation. Strip state oversight, the coalition warns, and those protections vanish with it.
Removing state oversight would weaken protections. State laws currently handle licensing, age limits, fraud prevention, and gambling addiction, which are areas not covered by federal financial regulation.
Nevada Ban on Kalshi Shows the Pattern
The Massachusetts case is not the only state-level loss prediction platforms are absorbing. Earlier this month a Nevada ban on Kalshi was extended by a state judge. The ruling sided with regulators who say event-based contracts amount to unlicensed gambling under Nevada law.
Nevada is not alone. Arizona, Connecticut, and Illinois are all moving to enforce their own gambling laws against prediction platforms. The cease-and-desist letters keep landing. The legal bills keep stacking. Every state action chips at the federal preemption argument by another inch.
And yet a US appeals court already upheld an order preventing New Jersey enforcement against Kalshi. That ruling is the precedent the CFTC will lean on. The agency’s filing essentially asks the New York federal court to extend the same logic across every state line.
What Does This Mean for Traders Holding Positions on Kalshi or Polymarket?
If you have an account on Kalshi or Polymarket, your contracts are not going anywhere this week. The CFTC suit is about jurisdiction, not product shutdown. But the longer the fight drags, the more likely individual states force geo-blocks. Watch your state’s enforcement filings, not just the federal docket.
The Bigger Read on Federal vs State Power
Call it what it is. This is a turf war dressed up as a regulatory question. The CFTC under Brian Quintenz, and now under Michael Selig, has spent months telling exchanges that event contracts are firmly inside federal jurisdiction. State attorneys general have responded by treating the same products as illegal sports books with a coat of paint.
The cynical read says everyone here has a constituency to protect. State AGs answer to voters who do not love unlicensed betting kiosks operating online. Federal regulators answer to the exchanges that pay registration fees and lobby in Washington. Both can be right about their own incentives at the same time.
The optimistic read says this is exactly what the system is supposed to do. Two layers of government disagree. A federal court will decide. The losing side appeals. Eventually the Supreme Court or Congress draws a line. Until then, every prediction platform builds compliance playbooks for both worlds and hopes the bills do not bury them first.
One thing the original coverage downplayed is how exposed the listed exchanges now are. Coinbase already runs the largest US-licensed crypto exchange. Gemini is publicly traded. Adding state-level gambling claims to their docket while also fighting CFTC-driven federal cases is a compliance load most fintechs are not built to absorb. The federal suit may save them. It may also drag them through twelve more months of headlines.
Frequently Asked Questions
What does the CFTC lawsuit against New York actually demand?
The CFTC asked the Southern District of New York for a declaratory judgment and a permanent injunction. The agency wants the court to confirm federal law gives it exclusive authority over event contracts and to block the state from enforcing gambling laws against federally registered prediction market exchanges like Kalshi, Coinbase, and Gemini.
Why did New York sue Coinbase and Gemini before this filing?
Attorney General Letitia James filed suits earlier in the week, claiming both exchanges ran event contract products that amount to unlicensed gambling under New York law. Her office argues that letting users bet on sports and political outcomes without a state gambling license violates rules covering licensing, age limits, and fraud prevention obligations.
What is the 37-state amicus brief about?
On Friday, 37 state attorneys general and Washington, D.C. filed a brief supporting Massachusetts in its case against Kalshi. The coalition argues the 2010 financial law Kalshi cites was never written to legalize sports betting and does not preempt state authority over gambling, licensing, or consumer protection programs.
How does the Nevada ban on Kalshi fit into the picture?
A Nevada judge this month extended an injunction blocking Kalshi from offering event-based contracts statewide. The court agreed with regulators that the products amount to unlicensed gambling under Nevada law. The ruling adds to a growing list of state-level losses that the CFTC’s federal suit is designed to neutralize through preemption.
This article is for informational purposes only and does not constitute investment advice. Every investment and trading decision involves risk. Readers should conduct their own research before making any financial decisions.

































