Regulatory
Federal Preemption
Reviewed by iGaming Times editorial teamLast reviewed 16 October 2026
What is Federal Preemption?
The constitutional principle that valid federal law overrides conflicting state law. In gambling it is the argument that federally regulated derivatives displace state betting statutes.
Key takeaways
- Federal preemption is the principle that valid federal law overrides conflicting state law.
- In gambling it is the argument that federally regulated derivatives on registered exchanges displace state betting statutes.
- The Third Circuit backed Kalshi in 2026 while the Ninth and Sixth Circuits ruled for the states, leaving identical products legal in some states and not in others.
Why it matters
Preemption is the hinge of the prediction market litigation. If contracts listed on a federally designated exchange fall within exclusive federal jurisdiction, a state cannot apply its gambling laws to them, and a venue with a federal registration operates nationwide regardless of state licensing. If they do not, every state may treat the same contracts as unlicensed wagers.
Federal appeals courts have divided. The Third Circuit held 2 to 1 in April 2026 that Kalshi was likely to show the Commodity Exchange Act preempts New Jersey's gambling laws. The Ninth Circuit (Nevada, August 2026) and the Sixth Circuit (Ohio and Tennessee, 25 September 2026) held unanimously that Kalshi's sports contracts are likely not swaps and that state gambling law can apply. New Jersey (Flaherty v. KalshiEX, No. 26-299) and Robinhood (Robinhood Derivatives v. Dreitzer, No. 26-338) have petitioned the Supreme Court. As of mid-October 2026 the Court had not acted. Courts reluctant to find preemption have stressed that gambling regulation sits close to the core of the police powers states have exercised since long before modern derivatives law, and that the statute itself gives the federal regulator a specific power to review contracts involving gaming.
On 9 October 2026 the CFTC proposed adding event contracts, including sports contracts, to the statutory definition of swap. The same day it issued an interim final rule excluding casino-style gambling products, such as sportsbook bets, from that definition. The June 2026 Rule 40.11 proposal had not been finalised.
The practical effect is a patchwork. While the question is unresolved, an exchange may be operating lawfully in one state, geofenced out of a second and defending enforcement in a third, all on identical products.
The bottom line
Preemption decides whether one federal registration beats fifty state licensing regimes. Until the Supreme Court resolves the split between the circuits, the same contract is legal and illegal at once depending on the postcode.
Sources
- KalshiEX LLC v. Flaherty, No. 25-1922 (opinion, 6 April 2026) - US Court of Appeals for the Third Circuit
- KalshiEX LLC v. Assad, No. 25-7516 (opinion, 28 August 2026) - US Court of Appeals for the Ninth Circuit
- KalshiEX LLC v. Schuler; KalshiEX LLC v. Orgel, Nos. 26-3196/5235 (opinion, 25 September 2026) - US Court of Appeals for the Sixth Circuit
- Docket No. 26-299: Flaherty v. KalshiEX, LLC - Supreme Court of the United States
- Docket No. 26-338: Robinhood Derivatives, LLC v. Dreitzer - Supreme Court of the United States
- CFTC Seeks Public Comment on Proposed Rule Concerning the Inclusion of Certain Event Contracts in the Definition of Swap (Release 9310-26) - Commodity Futures Trading Commission
- CFTC Issues Interim Final Rule Excluding Certain Activity from the Definition of Swap (Release 9309-26) - Commodity Futures Trading Commission
Federal Preemption elsewhere on iGaming Times
In the news
- SEC Approves Cboe Binary Options on 23 Companies' KPIs as Earnings Event Contracts Reach a Securities Exchange15 October 2026
- Mexico's Football Federation Sues Kalshi in New York Over Its Use of the Liga MX Name23 September 2026
- Michigan Orders Kalshi to Geofence and Raises the Penalty to $500,000 a Day3 September 2026
Frequently asked questions
What is federal preemption?
Federal preemption is the constitutional principle that valid federal law overrides conflicting state law. It can be express, where Congress says so in the statute, or implied, where federal regulation occupies an entire field or where complying with both regimes is impossible. In gambling the question is whether federal commodities law displaces state betting statutes for contracts traded on registered exchanges.
Does federal law preempt state gambling laws for prediction markets?
The courts are divided. In April 2026 the Third Circuit held, 2 to 1, that the Commodity Exchange Act likely preempts New Jersey's gambling laws as applied to sports event contracts on a CFTC-registered exchange. The Ninth Circuit (Nevada, August 2026) and the Sixth Circuit (Ohio and Tennessee, 25 September 2026) ruled unanimously the other way. Petitions from New Jersey (No. 26-299) and Robinhood (No. 26-338) are before the Supreme Court, which had not acted by mid-October 2026.
Why does preemption matter for gambling operators?
If contracts on a federally registered exchange fall within exclusive federal jurisdiction, a venue can operate nationwide without state gambling licences, competing with licensed sportsbooks that pay state taxes and follow state player-protection rules. If they do not, every state may treat the same contracts as unlicensed wagers. Until the question is settled, exchanges operate, geofence and litigate state by state.