# U.S. Government Broadens Scrutiny of Advanced AI Models > Source: > Published: 2026-06-26 16:00:26+00:00 AP reports that the U.S. government issued export-control directives that forced **Anthropic** to take its latest models `Fable 5` and `Mythos 5` offline to prevent foreign-nationals' access. Fortune and the Wall Street Journal report the escalation began after Amazon researchers found a documented jailbreak and Amazon CEO **Andy Jassy** raised the finding with White House officials. Gizmodo, citing The Information, reports **OpenAI** postponed a general release of `GPT-5.6` after requests from the Office of National Cyber Director **Sean Cairncross** and the Office of Science and Technology Policy led by **Michael Kratsios**; Gizmodo also reports an internal memo from **Sam Altman** saying the government will vet access "customer by customer" during a staggered rollout. Industry coverage frames these moves as a broader expansion of U.S. export and model-access controls with international and talent-policy consequences.