Federal Judge Blocks Government's Anthropic Blacklisting as First Amendment Violation

A federal judge halted the Department of War's blacklisting of Anthropic, finding it was unconstitutional retaliation for the company's public criticism of government contracting practices—an existential threat that already forced Anthropic to lose trade partners and contract opportunities. The ruling protects the right of defense contractors to publicly challenge government policies, establishing an important precedent for First Amendment protections in national security decisions. While the preliminary injunction stops immediate damage to Anthropic's business, the broader legal battle over government authority continues.