The CFTC (U.S. derivatives regulator) has filed an amicus brief (court filing by a nonparty) in a federal criminal case involving a soldier accused of trading Polymarket event contracts on non-public information. The filing gives the agency an opportunity to explain how event contracts (trades tied to outcomes) fit within federal swaps law, particularly when they concern political, geopolitical or other real-world events. The case is not a final judgment against Polymarket or prediction markets generally, but it could inform how courts and regulators assess market integrity, manipulation, surveillance, insider trading and registration requirements as event markets gain wider attention.