Judge rules Pentagon's blacklisting of Anthropic was illegal retaliation
A federal judge found the Trump administration's supply-chain-risk label and governmentwide ban on Anthropic violated the First and Fifth Amendments.
What happened: U.S. District Judge Rita Lin ruled that the Trump administration's designation of Anthropic as a national security "supply chain risk" was illegal. In a 59-page order, she found the Pentagon's move, and the governmentwide order to stop using Anthropic's Claude models, violated the First Amendment as unlawful retaliation, denied the company due process under the Fifth Amendment, and was "arbitrary and capricious" under federal administrative law. She wrote that invoking national security is "not a blank check to punish and retaliate against government critics."
Why it matters: This is a rare instance of a court blocking the executive branch from punishing a company for pushing back on government demands. Anthropic had refused to drop safety limits the Pentagon wanted lifted, and the administration responded by banning it across agencies and steering federal business toward seven rival AI companies. The ruling says that kind of retaliation crosses a legal line, reinforcing that even in the name of national security, agencies must follow due process and can't punish speech they dislike.
How it works, plainly: The dispute began when Defense Secretary Pete Hegseth tried to renegotiate AI contracts to let the Pentagon use the models for "any lawful use." Anthropic held two firm limits: no mass surveillance of Americans and no fully autonomous lethal weapons. Other AI labs signed on; Anthropic didn't. After Anthropic publicized the standoff, Trump ordered a blanket ban and Hegseth labeled the company a security threat, triggering agencies to drop its tools even outside defense work.
The rollout: Judge Lin noted the government kept pursuing Anthropic contracts and even discussing use of its new Mythos model for cybersecurity while calling the company a threat, undercutting its own case. She sided with Anthropic on most claims but ruled for the government on separation-of-powers arguments and claims against agencies that took no real action. The Justice Department hasn't said whether it will appeal, and a related Anthropic lawsuit in Washington, D.C. is still pending.