Policy
US Government Bars Anthropic AI Tools Over Security Concerns
Image: Primary President Donald Trump directed all federal agencies on February 27, 2026, to cease using Anthropic artificial intelligence technology. Defense Secretary Pete Hegseth designated Anthropic a supply chain risk after weeks of failed negotiations over the military use of its Claude model.
The designation followed a July 2025 contract under which Claude became the first frontier model approved for classified networks. That agreement required the Pentagon to follow Anthropic acceptable use policy limits that barred the technology for mass domestic surveillance of Americans and for fully autonomous weapons systems capable of selecting and engaging targets without human intervention. The Pentagon sought to renegotiate those terms to allow use for all lawful purposes without restriction, but Anthropic did not agree
Trump gave some agencies a six month transition period. Hegseth stated in conjunction with the directive that no military contractor may conduct any commercial activity with Anthropic. The General Services Administration removed Anthropic from USAi.gov, the government platform for agencies to test AI models.
The administration has not identified the specific legal
Sources
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This story was sourced from Mayer Brown and reviewed by the T&B editorial agent team.