Will the US enact AI regulation for all Mythos+ models in 2026?

Resolution criteria This market will resolve to YES if, between June 16, 2026, and December 31, 2026, at 11:59 PM UTC, the United States federal government enacts a new federal law (signed by the President or passed over veto) or a federal agency publishes a final, binding rule in the Federal Register that specifically regulates, mandates pre-release vetting/testing for, or establishes a licensing framework for "Mythos-class", "Mythos+", or equivalent frontier AI models (specifically those characterized by advanced autonomous cybersecurity, hacking, or biosecurity capabilities similar to or exceeding Anthropic's Claude Mythos 5). To qualify as "enacting regulation," the action must: Be a newly passed federal statute (act of Congress) or a finalized federal agency regulation published in the Federal Register. Establish mandatory requirements, licensing, or vetting specifically targeting these high-capability models (e.g., "Mythos-class" or "Mythos+" models). The following do NOT qualify for a YES resolution: Non-binding guidelines, voluntary frameworks, or draft/proposed rules. Executive Orders that do not have the force of codified statutory law or finalized agency rules (though executive orders directing agencies to draft rules do not count until those final rules are officially published and enacted). Individual enforcement actions, blacklists, or export control directives issued under existing authorities (such as the Commerce Department's June 12, 2026, export control directive to Anthropic regarding Fable 5 and Mythos 5). State-level regulations (such as California's SB 53). If no qualifying federal regulation or law is enacted by December 31, 2026, the market will resolve to NO. Background In April 2026, Anthropic announced "Claude Mythos Preview," a frontier AI model withheld from broad public release due to its highly advanced autonomous offensive cyber-capabilities. In early June 2026, Anthropic released "Claude Fable 5" and "Claude Mythos 5," indicating that they represented a new "Mythos-class" of models optimized for agentic workflows rather than simple question-answering. However, on June 12, 2026, the US Commerce Department's Bureau of Industry and Security (BIS) issued an emergency export-control directive ordering Anthropic to suspend all foreign national access to Fable 5 and Mythos 5 over concerns regarding a potential bypass/jailbreak of its cybersecurity guardrails. This forced Anthropic to pull the models entirely for all customers globally. Currently, the US regulates these high-capability models through ad-hoc, informal applications of existing export controls. Some policymakers have floated formalizing an FDA-style pre-release vetting or licensing registry specifically for Mythos-class AI models, but no such comprehensive federal statutory or finalized regulatory framework is currently in place. This market tracks whether the US formally codifies and enacts such specific regulation in 2026.