type: timeline_event
On February 27, 2026, President Donald Trump issued a directive ordering all United States government agencies to "immediately cease" using technology from Anthropic, while Defense Secretary Pete Hegseth formally designated the AI company a "Supply-Chain Risk to National Security." The action terminated Anthropic's approximately $200 million Defense Department contract—a contract under which Claude had become the first frontier AI model approved for use on classified military networks—and imposed cascading consequences throughout the federal contractor ecosystem.
The supply chain risk designation carries consequences that extend far beyond the direct government relationship. Any company seeking to do business with the U.S. military would be required to cut ties with Anthropic's technology. The designation is a classification instrument historically reserved for companies from adversarial foreign nations—Huawei of China being the paradigmatic example—and had never previously been applied to an American company for refusing to remove safety guardrails from its products. Legal experts at Lawfare and Just Security immediately questioned whether the designation would survive judicial scrutiny, noting that it appeared to be retaliatory rather than based on any genuine national security threat.
Anthropic responded with a statement promising to challenge the designation in court. "We believe this designation would both be legally unsound and set a dangerous precedent for any American company that negotiates with the government," the company said. CEO Dario Amodei told CBS News that Anthropic had not yet formally received documentation of the designation but said "when we receive some kind of formal action, we will look at it, we will understand it and we will challenge it in court," calling the action "retaliatory and punitive."
The action represented an unprecedented use of national security contracting power as an instrument of corporate coercion, weaponizing a tool designed to protect American industry from foreign adversaries against a domestic company that had refused to remove AI safety restrictions. The designation established that the Trump administration was willing to treat American technology companies as national security threats if they maintained ethical standards that conflicted with Pentagon preferences—a precedent with profound implications for the future of voluntary AI safety commitments across the entire industry.