Federal Judge Voids Pentagon's Designation of Anthropic as Supply Chain Risk

A federal judge in California has struck down the Pentagon's decision to label Anthropic a threat to national security, finding that the designation amounted to illegal government retaliation against the artificial intelligence company.

U.S. District Judge Rita Lin concluded on Thursday that the labeling violated both the First Amendment protections on free speech and the Fifth Amendment guarantee of due process. She also characterized the decision as "arbitrary and capricious" in her ruling.

Background: The Pentagon's Blacklist#

Earlier this year, the Trump administration—led by Defense Secretary Pete Hegseth and President Donald Trump—designated Anthropic a supply chain risk and directed all federal agencies to cease working with the Claude maker. The move effectively barred the company from government contracts across defense and non-defense departments alike.

What Set Off the Dispute#

The tensions originated from Anthropic's refusal to remove certain safety safeguards that would enable the Pentagon to deploy its models for fully autonomous weapons systems and mass domestic surveillance. While the Pentagon contended that it only sought to use Anthropic's technology for lawful applications, the company declined to modify its guardrails—a stance that became the flashpoint for the conflict.

Judge's Reasoning: Disconnect Between Stated and Actual Concerns#

In her decision, Judge Lin emphasized a stark contradiction between the Pentagon's rationale and its actions. She highlighted that the government simultaneously pursued a Defense Production Act application against Anthropic—which would classify it as essential to national security—while also seeking to continue contracting with the company for a new model called Mythos for cybersecurity applications.

She also noted that Anthropic demonstrably lacks any backdoor mechanisms into its technology after delivery to the Department of War, undermining claims of actual technical risk.

"The evidence demonstrates that the broad measures imposed on Anthropic were illegal and baseless," Lin wrote, adding that invoking national security "is not a blank check to punish and retaliate against government critics."