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Anthropic sues U.S. government
Anthropic filed two federal lawsuits this week challenging U.S. government actions that have cut the company off from certain federal work.
“Anthropic has filed two federal lawsuits seeking to overturn a Pentagon decision that put the AI company on a national-security blacklist and a separate presidential order banning federal employees from using its chatbot, Claude.”
One suit was filed in a California federal court and the other in the Washington, D.C. appeals court.
The suits seek to overturn the Pentagon's designation of Anthropic as a 'supply chain risk'.
They also seek to block a presidential order barring federal employees from using its chatbot, Claude.
Anthropic describes the government moves as 'unprecedented and unlawful,' arguing they exceed legal authority and harm the company's business and constitutional rights.
AI use in military contracts
At the heart of the dispute are contract terms and limits on military and surveillance uses of AI.
Anthropic says it refused Pentagon demands to allow its models for "all lawful purposes," including mass surveillance and lethal autonomous weapons, and argues its refusal is protected speech and due-process rights were violated.
The Pentagon insists private firms cannot unilaterally restrict how the government uses technology in lawful military and tactical contexts.
Supply-chain risk for Claude
The supply-chain-risk designation carries immediate commercial and technical consequences.
“Anthropic sued the U.S. Department of Defense and other federal agencies after being labeled a supply-chain risk, a designation that limits its ability to work with defense contractors.”
It can bar Pentagon contractors from using Anthropic’s Claude in defense work, put a potential Pentagon contract at risk, and threaten a significant share of Anthropic’s projected revenue.
Observers note the move is unusual, normally reserved for foreign adversaries, and could force contractors to replace Claude in government systems or phase it out over months under presidential direction.
Debate over blacklist use
Industry reaction and legal observers have raised concerns about precedent and fairness.
Critics say applying a blacklist normally used against foreign adversaries to a U.S. company departs from historical practice.
They say the move could chill innovation and may prompt emergency judicial relief as Anthropic seeks temporary injunctions.
The case also highlights divergent government and industry approaches, with rivals such as OpenAI moving quickly to strike a Pentagon deal while Anthropic pursues litigation as it expands commercial partnerships including Microsoft integrations.
Anthropic dispute overview
Beyond the courtroom, the dispute has become political and reputational: President Trump publicly urged agencies to stop using Anthropic, and the company says the actions have already jeopardized contracts and reputation while boosting public attention and downloads.
“President Trump posted on Truth Social that he would order all federal agencies to stop using Claude and gave the Pentagon six months to phase it out, writing, 'We don’t need it, we don’t want it, and will not do business with them again!'”
The government argues the measures protect national security and procurement flexibility, while Anthropic seeks judicial relief and warns the designation will chill debate about appropriate limits on military and surveillance uses of AI.
