Anthropic Sues Trump Administration Over ‘Supply Chain Risk’ Label and Claude Ban

Anthropic’s dispute with the Trump administration stems from the artificial intelligence company’s limits on using its models for mass surveillance or lethal-weapons decisions without meaningful human involvement. The US Defense Department has questioned whether those restrictions could undermine access to the technology during wartime. The government’s subsequent move to label Anthropic a “supply-chain risk” and bar federal agencies from using its technology has raised broader questions about military AI policy, procurement powers and contractors’ right to challenge government demands.

A US federal judge said the Trump administration still had not produced sufficient evidence that Anthropic posed a supply-chain risk, casting doubt on the basis for the government-wide restriction. The Defense Department has defended its position by citing wartime security concerns, while the judge warned that punishing a contractor for opposing government policy could set a troubling precedent for retaliation against dissent. The available report did not specify the date of the ruling, any monetary amount at issue or when the prohibition took effect.

Former OpenAI members Dario and Daniela Amodei founded Anthropic in 2021 with a focus on AI safety. The company secured a U.S. Department of Defense contract worth up to $200 million in July 2025. Its restrictions barring Claude’s use for mass domestic surveillance and fully autonomous weapons without human control have now put its technology governance policies at the center of defense procurement and industry competition.

While developing Claude 3.7 Sonnet, Anthropic delayed the model after testing indicated it could improve biological-weapons planning capabilities. The model was released on February 24, 2025. Its Cybench problem-solving rate within five attempts was about one-third, compared with only about 5% a year earlier. On February 27, 2026, Trump ordered federal agencies to stop using it, and the Defense Department designated it a national security supply-chain risk on March 4.

Anthropic secured a US Defense Department AI contract worth up to $200 million in July 2025, but later fell out with the military after insisting that Claude must not be used for mass domestic surveillance or fully autonomous weapons. The Defense Department formally designated the company a supply-chain risk on March 5, 2026, restricting contractors from using its technology on defense contracts and extending the military procurement dispute to commercial customers.

At a court hearing on March 10, 2026, Anthropic said more than 100 corporate customers had raised concerns about the risks since the ban. One financial-services customer paused a $15 million transaction, while two other financial firms demanded the right to terminate at any time before proceeding with contracts worth a combined $80 million. Anthropic estimated that its 2026 revenue losses could reach hundreds of millions or even billions of dollars.