Justice Department Defends Anthropic Supply Chain Risk Designation in Court Filing

Government Claims Anthropic Poses Operational Security Risk

Justice Department attorneys argued that the Trump administration acted lawfully when it penalized Anthropic for trying to limit military use of its AI technology. The government filing states that Defense Secretary Pete Hegseth reasonably determined that "Anthropic staff might sabotage, maliciously introduce unwanted function, or otherwise subvert the design, integrity, or operation of a national security system."

The Department of Defense expressed particular concern about allowing Anthropic continued access to technical and operational warfighting infrastructure. According to the filing, officials worried that Anthropic could attempt to disable its technology or alter model behavior during ongoing military operations if the company determined its corporate guidelines were being violated.

Anthropıc has maintained that its Claude models should not facilitate broad surveillance of Americans and are not reliable enough for fully autonomous weapons systems. The company argues these positions reflect responsible AI development rather than obstruction of legitimate government use.

First Amendment Arguments Rejected by Federal Attorneys

The Justice Department dismissed Anthropic's First Amendment claims, stating that "the First Amendment is not a license to unilaterally impose contract terms on the government." Federal attorneys characterized Anthropic's concerns about losing business as "legally insufficient to constitute irreparable injury" and called on Judge Rita Lin to deny the company's request for relief during litigation.

Anthropıc faces potential losses of billions in expected revenue this year if the supply chain risk designation stands. The company has requested to resume normal business operations until the litigation concludes, with a hearing scheduled for next Tuesday.

Several organizations have filed court briefs supporting Anthropic, including AI researchers from OpenAI and Google DeepMind, Microsoft, federal employee unions, and former military leaders. No organizations have publicly filed briefs supporting the government's position.

Military AI Transition Plans and Industry Implications

The Defense Department is working to replace Anthropic's AI tools with competing technologies from Google, OpenAI, and xAI over the coming months. Government attorneys acknowledged that the Pentagon "cannot simply flip a switch" given that Anthropic is currently "the only AI model cleared for use" on classified systems during active combat operations.

One significant military application involves Claude's integration with Palantir data analysis software for generating war plans and operational analysis. The transition to alternative AI providers will require new security clearances and system integrations across multiple defense applications.

The case highlights tensions between AI companies seeking to maintain ethical guidelines and government agencies requiring unrestricted access to contracted technologies. European AI companies and defense contractors will likely monitor this precedent closely, as similar conflicts could emerge around military AI procurement and usage restrictions across NATO allies.

This legal battle between Anthropic and the Justice Department represents a significant test case for how AI companies can balance corporate responsibility principles with government contract requirements. Wired reported that Anthropic has until Friday to file a counter response to the government's arguments.