Legion, a U.S. legal-technology company, sued the federal government in Washington, D.C., federal court over a June 12 directive issued by the U.S. Commerce Department's Bureau of Industry and Security that required Anthropic to disable access for "any foreign national" to its most advanced models. Anthropic turned off access to its Fable 5 and Mythos 5 models the same day to ensure compliance. Fable 5 had been publicly available for approximately three days—Anthropic released it on June 9 and removed it on June 12—before the directive forced a shutdown. Amazon researchers found workarounds to Fable 5's safeguards, and this finding was shared with the U.S. government, contributing to the export control order. Legion said the shutdown cut off access for Canada-based members of its software team. The company filing stated, "The harm to Legion is immediate, irreparable, and existential." Legion asked a judge to vacate the directive and to issue a preliminary order barring enforcement. Anthropic is not a party to the litigation. Anthropic stated the government believes it became aware of a method of bypassing Fable 5, describing the potential jailbreak as "essentially consisting of asking the model to read a specific codebase and fix any software flaws," and noted the level of capability is widely available from other models. The directive required Anthropic to suspend access for all customers because implementing a nationality-verification scheme was