Kalshi files amicus brief in Circuit preemption case as speculative review scenarios circulate
Kalshi filed an amicus brief in a Circuit case arguing that only the CFTC can regulate its event contracts, including sports-related contracts. The brief contends that the Eastern District of Wisconsin should have blocked the state from enforcing gambling laws against the contracts. Separately, DeFi Rate published a speculative analysis examining potential downstream consequences for prediction-market operators, CFTC policy, state gambling laws, and congressional lobbyists if the Supreme Court declines to review Kalshi cases. No actual Supreme Court action was reported.
The Seventh Circuit filing keeps Kalshi's preemption theory alive in a forum that could either reinforce or undercut its parallel Supreme Court strategy. A win would give Kalshi a clean federal precedent to wield against the state gambling suits already pending in New York and Missouri and the losses already suffered in Ohio and Tennessee. A loss deepens the circuit split but weakens the cert petition now before the justices.
Polymarket, Robinhood, and Crypto.com face identical state gambling-framing theories in their own suits, so the Seventh Circuit's eventual ruling becomes shared infrastructure for the entire regulated prediction-market sector. Kalshi is effectively running two federal tracks — appellate precedent and cert — while state courts keep moving faster. The first track to deliver a favorable federal answer will determine whether these platforms operate national markets or permanent geofences.