# D.C. appeals court sides with Pentagon on blacklist of Anthropic

> Source: <https://thehill.com/policy/technology/6111414-dc-circuit-upholds-anthropic-blacklist/>
> Published: 2026-09-25 15:48:56+00:00

The D.C. Circuit Court of Appeals sided with the Trump administration in its blacklisting of the artificial intelligence firm Anthropic, finding the Pentagon adequately backed up its decision to label the firm a national security risk. The 2-1 ruling, issued Friday, rejected Anthropic’s challenge, finding the Department of Defense had “ample support” for its belief…

## Also reported by

- nypost.com: Appeals court declines to block Pentagon’s blacklisting of Anthropic <https://nypost.com/2026/09/25/business/court-declines-to-block-pentagons-blacklisting-of-anthropic/>
- businessinsider.com: Appeals court allows Pentagon to label Anthropic a national security risk <https://www.businessinsider.com/appeals-court-allows-pentagon-to-label-anthropic-national-security-risk-2026-9>