Judge voids DoD supply-chain blacklist of Anthropic as illegal retaliation
The ruling is the first to hold that Section 3252's national-security label cannot be weaponized to punish a vendor's public speech or contracting positions, a line the executive branch has been testing for two years.
TL;DR
A federal judge invalidated the Defense Department's supply-chain risk designation of Anthropic, ruling Thursday that the label was unlawful retaliation for the company's refusal to lift its restrictions on mass surveillance and lethal autonomous weapons, and for going public about the dispute. Judge Rita Lin found DoD violated both the First Amendment and due process, calling the designation "illegal and baseless." The ruling removes a tool the administration had begun using to sideline vendors whose public stances it opposed, and contractors across the defense-industrial base had been watching the case closely.
Judge Rita Lin of the U.S. District Court for the Northern District of California ruled Thursday that the Department of Defense's supply-chain risk designation of Anthropic was "illegal and baseless," finding the label constituted unlawful retaliation for the company's protected speech and a violation of its Fifth Amendment due process rights.
The ruling traces the dispute to fall 2025, when DoD pushed Anthropic to remove two longstanding restrictions on Claude, no mass surveillance of U.S. citizens and no lethal autonomous warfare. Anthropic refused. Negotiations were cordial, according to the court's findings, and Anthropic offered to help DoD transition to another vendor. Then the company went public: CEO Dario Amodei published an essay on AI safety in January 2026, and the company issued a formal statement on February 26 about its position on military AI use. Within 24 hours, President Trump announced a governmentwide ban on Anthropic, and Defense Secretary Pete Hegseth declared that any company doing business with the U.S. military had to sever its commercial relationship with Anthropic.
Lin's ruling zeroed in on what happened next. DoD designated Anthropic a "supply chain risk" under Section 3252, a label the court noted has never been applied to a domestic company and is "directed principally at foreign intelligence agencies, terrorists, and other hostile actors." The judge found that the Pentagon's own public statements, including references to Anthropic's "arrogance," showed the designation was punishment, not a genuine security assessment.
The First Amendment and due process findings
The court held that the government "violated the law when it went further" than simply choosing a different vendor. Lin found that the supply-chain risk designation, the governmentwide ban, and the requirement that contractors sever ties with Anthropic "do not appear to be directed at the government's stated national security interests." The ruling frames the core question narrowly: "An IT vendor does not become a potential adversary of the United States whenever it asks probing questions or stubbornly insists on particular contracting terms."
On due process, the court found DoD provided no advance notice or opportunity for Anthropic to respond before the ban took effect. The agency also failed to follow the procedures laid out in the federal law it invoked, Lin wrote.
What contractors were watching
The case had drawn intense attention across the defense-industrial base. Microsoft filed an amicus brief in March arguing that the designation set "a dangerous precedent that puts all government contractors at risk." Multiple industry sources told Nextgov/FCW in April that contractors feared "their past corporate decisions or public stances" were being scrutinized through new political lenses, a concern that the ruling now addresses directly.
GSA has already restored Anthropic to the Multiple Award Schedule and USAi.gov, per an April 3 statement withdrawing the earlier removal order. The Information Technology Industry Council said the ruling "removes uncertainty for businesses across industry seeking to partner with the U.S. government."
The Pentagon did not return a request for comment on the ruling. The question now is whether the administration appeals, and if so, what standard appellate courts will apply to future national-security-based vendor exclusions to distinguish legitimate security concerns from retaliation.
Published ·Deep Fathom