Federal Judge Overturns Pentagon Blacklisting of Anthropic

The designation of Anthropic as a risk to the military supply chain violates the First and Fifth Amendments, Judge Rita Lin ruled, ordering the withdrawal of all directives against the company.

Federal Judge Rita Lin, of the Northern District of California, ruled on August 28, 2026, that the Department of Defense's blacklisting of Anthropic violated the First Amendment as well as the Due Process Clause of the Fifth Amendment. She ordered the government to withdraw all directives against the company.

The 59-page decision found that officials retaliated against Anthropic and deprived the company of protected interests without sufficient notice or a real opportunity to defend themselves. "The hollow invocation of national security is not a blank cheque to punish government critics and take revenge on them," the judge wrote.

The challenged measure, which blocked Anthropic's access to certain military contracts, followed the company's refusal to let the military use its Claude models for domestic surveillance or autonomous weapons. It was the first time a U.S. company had been publicly designated as a supply chain risk under a government procurement text designed to protect military systems from foreign sabotage.