Judge Blocks Pentagon Blacklist of Anthropic as Unlawful

A federal judge has halted the Pentagon's effort to blacklist artificial intelligence company Anthropic, ruling that the Defense Department illegally targeted the firm for its public criticism of plans to deploy AI in mass surveillance and autonomous weapons systems.

US District Judge Rita Lin issued a 59-page order late Thursday permanently barring the Trump administration from enforcing rules that cut off Anthropic from federal contracts and barred other contractors from working with the company. Lin, a Biden appointee, determined that the designation of Anthropic as a national security supply chain risk amounted to unlawful retaliation under the First Amendment and violated the company's due process rights.

"The empty invocation of national security is not a blank check to punish and retaliate against government critics," Lin wrote. She found that Defense Secretary Pete Hegseth's actions were driven by a desire to make an example of Anthropic after the company refused to remove safeguards from its Claude AI models that would have allowed their use for spying on Americans or developing weapons that operate without human oversight.

The dispute began earlier this year when the Pentagon sought to integrate Claude into classified military systems. Anthropic insisted on restrictions to prevent the technology from enabling mass domestic surveillance or fully autonomous lethal weapons, arguing that current AI models lack the reliability for such applications. The Trump administration responded by severing ties in March and imposing the supply chain risk label, which effectively isolated the company from defense-related work.

Anthropic sued in California federal court, claiming the moves exceeded the Pentagon's authority and punished protected speech. The company maintained that its concerns centered on responsible AI deployment rather than opposition to national security needs. In her ruling, Lin rejected the administration's national security justification, noting that the penalties were based principally on Anthropic's critique of government policy rather than any substantiated risk.

The decision prevents federal agencies from enforcing President Trump's earlier directive to stop using Anthropic tools, though it leaves room for the government to pursue other AI providers as long as actions comply with regulations. Anthropic welcomed the outcome, stating it remains committed to collaborating with officials on AI applications that benefit national security.

The ruling underscores ongoing tensions over the limits of executive power when national security claims intersect with corporate speech on emerging technologies. Administration officials have signaled they may appeal, setting up further legal scrutiny of how federal agencies handle dissent from private sector partners in sensitive fields like artificial intelligence.

Lin's order also highlighted prior concerns about the Pentagon's approach during the feud, describing the attacks on Anthropic as troubling. The case illustrates the risks of using broad designations to sideline critics without clear evidence of wrongdoing, particularly when those critics raise alarms about the ethical boundaries of AI in warfare and domestic monitoring.

As the Trump administration continues to push expanded military use of AI, the court's intervention serves as a reminder that such efforts must navigate constitutional protections against viewpoint discrimination. The outcome could influence how other technology firms engage with government contracts involving high-stakes applications, where disagreements over safeguards might otherwise trigger swift punitive measures.