The Trump administration has formalized its legal defense against Anthropic following its designation as a national security risk.Defense Secretary Pete Hegseth implemented the blacklist after the company refused to remove guardrails for autonomous weapons.In a recent DOJ filing, the government argued the move was a lawful response to contractual concerns rather than a First Amendment violation.Anthropic maintains that the label is an unlawful retaliation that threatens billions in revenue and filed suit in San Francisco.