A federal court has struck down the Trump administration’s attempt to blacklist Anthropic from government contracting, ruling that designating the AI company as a “supply chain risk” to national security was both unlawful and retaliatory.

Judge Rita F. Lin of the US District Court in Northern California granted partial summary judgment in Anthropic’s favor on August 27, calling the designation “arbitrary and capricious” and a violation of the company’s First Amendment rights. The 59-page opinion effectively restores Anthropic’s ability to compete for federal contracts worth potentially billions of dollars.

How an AI ethics dispute became a national security fight

The conflict traces back to negotiations over a roughly $200M contract for Anthropic’s AI models. During those talks, Anthropic insisted on including ethical usage guidelines that would restrict certain military applications of its technology. President Trump and Defense Secretary Pete Hegseth publicly accused the company of endangering national security by refusing to let the military use its AI without guardrails. On February 27, 2026, the administration issued a formal supply chain risk designation against Anthropic.

That designation is a serious weapon in the government’s regulatory arsenal. It’s the kind of label typically reserved for foreign adversaries like Huawei or Kaspersky, companies suspected of building backdoors for hostile governments. The practical effect was immediate and severe. Federal agencies across the board, including the Department of Defense, Treasury, and Homeland Security, were barred from doing business with Anthropic. The company claimed the blacklisting threatened billions in potential revenue and inflicted serious reputational damage.