# The Trump admin blocked this AI over security fears - Now it’s being released > Source: > Published: 2026-07-01 10:54:38+00:00 # The Trump admin blocked this AI over security fears - Now it’s being released - U.S. officials initially blocked Anthropic's advanced AI models, Fable and Mythos, citing national security risks due to their potential to identify critical infrastructure vulnerabilities. - An export ban was imposed, which Anthropic found difficult to enforce, leading to negotiations with the US Commerce Department. - The ban has since been lifted, with Anthropic implementing enhanced safeguards and collaborating with the US government to make its models available. - Mythos 5 is now accessible to "trusted" US organizations, while Fable 5, designed for the general public with stronger protections, is set for wider release. - Anthropic acknowledges the challenge of fully preventing AI "jailbreaks" and continues to work with government and industry partners to develop shared safety standards.