US Government Labels Anthropic a 'National Security Risk': Silicon Valley Rallies Support as AI Military Use Conflict Escalates

In March 2026, the Trump administration designated AI development company Anthropic as a 'national security supply chain risk.' This measure was taken in retaliation for the company's refusal to remove safety guardrails on military use of its AI model Claude. Defense Secretary Pete Hegseth announced the designation on March 3, with the government claiming it is a legitimate measure based on contract negotiations and national security concerns that does not infringe on freedom of speech. Anthropic has sued the US government, calling the designation 'unprecedented and illegal.' The company has made clear its position that 'AI is not yet safe enough for use in autonomous weapons, and we are opposed in principle to domestic surveillance.' The designation could exclude Anthropic from certain military contracts and result in reputational damage and billions of dollars in economic losses. Notably, major Silicon Valley companies including Google and Microsoft have quietly expressed support for Anthropic out of concern over government intervention in technology. This development highlights the serious conflict between the government and technology companies over military use of AI technology. It has evolved into a major industry-wide debate over the balance between AI ethics and national security, and is likely to become a pivotal case shaping the future direction of AI regulation.