The Chicago Mercantile Exchange (CME) has filed a lawsuit against its regulator, the Commodity Futures Trading Commission (CFTC), challenging the classification of Bitcoin perpetual contracts. The legal dispute centers on whether these contracts should be categorized as swaps or futures, a distinction that carries significant regulatory implications. This lawsuit comes amid a broader regulatory landscape influenced by the post-Chevron legal environment, which could impact how courts interpret agency decisions. The outcome of this case could have far-reaching effects on the trading and regulation of cryptocurrency derivatives.