Anthropic sues US government after being labeled a ‘supply chain risk’ in AI controversy
Artificial intelligence firm Anthropic has filed an unprecedented lawsuit against the United States government after it was officially labeled a “supply chain disaster”, fueling a heated debate over the military’s use of cutting-edge AI technology.
The legal action, filed in federal court in California, challenges an order issued by the Donald Trump administration that effectively blocked US government agencies from using Anthropic’s AI systems. The company says the move was politically motivated retaliation after it refused to lift restrictions on how its technology could be used by the US military.
Anthropic’s lawsuit says the ruling was “unprecedented and illegal” and violated constitutional protections for free speech and due process.
“The Constitution does not allow the government to use its broad powers to punish a company for its protected speech,” the company said in its complaint. “There is no federal law authorizing the actions taken here.”
The conflict stems from disagreements between Anthropic CEO Dario Amodei and US defense officials, including Pete Hegseth, over how the company’s artificial intelligence tools could be used by the Pentagon.
Anthropic has long maintained strict contractual restrictions on the use of its technology, including a ban on using its AI models for “lethal private warfare” and mass domestic surveillance of American citizens.
According to the lawsuit, defense officials wanted the company to remove these restrictions from its government contracts. Anthropic refused, saying such safeguards were necessary to ensure the responsible use of powerful AI systems.
The company said discussions with the Department of Defense were ongoing and that both sides were working on developing language that would allow continued cooperation while maintaining ethical boundaries.
However, those talks reportedly collapsed after the White House intervened.
After negotiations broke down, the Pentagon designated Anthropic as a “supply chain risk” — a category often applied to companies deemed unsafe or untrustworthy partners for government programs.
The designation effectively prevents US government agencies and contractors from using Anthropic’s software tools.
The move comes amid public criticism from the Trump administration, with White House officials accusing the company of trying to dictate military policy.
Liz Huston, a White House spokeswoman, told reporters that Anthropic is a “strong, up-and-coming company” that wants to set its sights on national security operations.
“Under the Trump administration, our military will obey the Constitution of the United States — not the operating principles of an AI company,” Huston said.
Anthropic’s contentions that its limitations were standard contractual provisions designed to prevent misuse of AI systems.
The legal challenge names a broad list of defendants, including President Trump’s office and senior government officials such as Marco Rubio and Howard Lutnick.
The lawsuit also targets 16 federal agencies, including the Departments of Defense, Homeland Security and Energy.
Anthropic claims that the ban on its technology has caused significant reputational and commercial damage.
The company said both current and future commercial contracts are now at risk, potentially putting “hundreds of millions of dollars at risk in the near term”.
It also argued that the decision created a broad chilling effect across the technology sector by discouraging companies from speaking publicly about the risks associated with advanced AI.
The case has already received support from across the tech industry.
About 40 employees from rival companies including Google and OpenAI filed a joint legal brief supporting Anthropic’s position, despite the firms competing in the fast-growing AI field.
The signatories warned that the deployment of advanced AI systems without safeguards could pose serious risks, especially when used for mass surveillance or autonomous weapons.
“As a group, we differ in our politics and philosophies,” the engineers wrote in their article. “But we are united in the belief that today’s AI systems pose a risk if they are used to enable mass surveillance or the operation of autonomous lethal weapons systems without human supervision.”
Anthropic’s flagship AI system, Claude, is now widely used by technology companies and developers for coding, research and business software tasks.
Companies such as Microsoft, Amazon and Meta have confirmed that they will continue to use the technology in commercial applications, although not in projects involving US defense agencies.
Anthropic is not seeking financial damages in the lawsuit. Instead, it is asking the court to declare the government’s order unconstitutional and remove the term “supply chain risk” immediately.
Legal experts believe the dispute could be a landmark in defining how governments interact with AI developers.
Carl Tobias, a law professor at the University of Richmond, said the case could eventually reach the US Supreme Court.
“Anthropic may win in federal court,” Tobias said. “But this officer is not ashamed to appeal. He will probably go to the Supreme Court.”
The result could have major implications for the rapidly growing AI industry, especially as governments around the world increasingly rely on private technology companies to provide artificial intelligence systems critical to defense, intelligence and national security operations.
Meanwhile, the case marks a rare time when a major tech company has openly challenged the government’s mandate over the future deployment of artificial intelligence.
