New York AG Letitia James sues to block Polymarket
New York Attorney General Letitia James has sued to block Polymarket from operating in New York. The lawsuit was filed September 26. Published material did not contain specific claims or requested remedies. The action targets a CFTC-registered platform that acquired a CFTC-licensed exchange in 2025 and operates under a CFTC order of designation. Polymarket had already filed its own federal suit against James in the same preemption dispute.
James' suit against Polymarket tightens the preemption vise on every CFTC-registered venue. Kalshi already faces her parallel suit, and both platforms must now split legal resources between federal offense and state defense. The Polymarket case will set precedent Kalshi can borrow or be bound by, depending on outcome.
Each new state filing compounds faster than any single case resolves, and platforms lack a Supreme Court hearing date for a clean federal answer. Traders hold positions whose legality shifts with state borders, not regulation. Polymarket's own federal suit against James sought to force that question early, but delay now risks more state copycat suits before any ruling lands. The first platform to lose a preemption ruling becomes the template every state copies.
Joins a parallel New York Attorney General suit against Kalshi and Connecticut's earlier Polymarket action as the fourth state-level preemption challenge against CFTC-registered platforms this month.