President Donald Trump signed an executive order on artificial intelligence oversight on June 3, 2026, after weeks of delays. The order establishes a voluntary framework for the federal government to assess the national security risks of the most advanced AI systems for up to 30 days before their public release. This 30-day window is a compromise, as an earlier draft proposed 90 days, while AI companies pushed for 14 days. The order was partly triggered by concerns over Anthropic's Mythos model, which can reportedly exploit cybersecurity vulnerabilities at an unusual pace. The government intends to collaborate with trusted partners who will gain early access to these 'covered frontier models' to foster secure innovation and enhance the cybersecurity of critical infrastructure. The order explicitly states that participation is voluntary and does not create mandatory licensing or permitting requirements. It also directs the Treasury, NSA, and CISA to establish a joint 'AI cybersecurity clearinghouse' for vulnerability assessment and remediation with private industry. Tech companies like OpenAI, Google, and Microsoft have expressed support for the order, citing a balance between innovation and security.