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Robinhood sues Washington officials over threatened event-contract enforcement

Regulation

Robinhood sued Washington state officials in federal court on 30 March, seeking to block enforcement of state gambling laws against its event-contract business. The company argues that federal law gives the Commodity Futures Trading Commission authority over the contracts and pre-empts state regulation; its case follows Washington’s lawsuit against Kalshi on 27 March.

The case could determine whether Washington can apply its gambling laws to event contracts offered through Robinhood’s exchange partners.

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Polymarket sues Massachusetts over threatened state enforcement

Polymarket filed a federal lawsuit on 9 February 2026 against Massachusetts Attorney General Andrea Joy Campbell, seeking to block what it describes as imminent state enforcement against its prediction market. The company argues that federal oversight applies to its event contracts; the filing follows a Massachusetts court’s refusal to pause an injunction against Kalshi’s sports contracts.

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