Anthropic sued the U.S. Department of War and Secretary Pete Hegseth after the Pentagon labeled it a national security supply-chain risk, the first such designation ever applied to an American company. Anthropic says the label was retaliation for its refusal to let the government use Claude for mass surveillance or fully autonomous lethal weapons, and it sought to have the designation declared unconstitutional and unlawful under the APA. A federal judge sided with Anthropic in August 2026, while a parallel challenge in the D.C. Circuit continues.
LATEST DEVELOPMENT · AUG 27, 2026
On August 27, 2026, Judge Rita F. Lin ruled on cross-motions for summary judgment, entered an order of final relief and judgment for Anthropic, holding that the Pentagon’s designation of the company as a supply-chain risk, the first ever applied to an American company, was unlawful retaliation for constitutionally protected speech, violated Fifth Amendment due process and was arbitrary and capricious under the Administrative Procedure Act. Anthropic’s parallel petition in the D.C. Circuit challenging the separate designation under 41 U.S.C. § 4713 remains pending, after that court denied a stay on April 8, 2026, and a government appeal of the district court judgment is expected.
BACKGROUND
Anthropic sued the U.S. Department of War (the renamed Department of Defense) and Secretary Pete Hegseth in March 2026 after the Pentagon designated the AI company a “Supply-Chain Risk to National Security,” the first time that label had ever been applied to an American company. The designation followed Anthropic’s refusal to remove usage restrictions in Claude’s terms of service that barred its use for lethal autonomous weapons without human oversight and for mass domestic surveillance of Americans. Anthropic said the Trump administration retaliated against it for those restrictions by branding it a security risk and pressuring federal agencies to stop using its products.
Anthropic filed parallel actions on March 9, 2026, a complaint in the Northern District of California seeking declaratory and injunctive relief under the First and Fifth Amendments and the Administrative Procedure Act, and a petition for review in the D.C. Circuit challenging the designation as unlawful under the federal supply-chain risk statutes, including 41 U.S.C. § 4713. The company argued that Congress never gave the Pentagon or the President authority to blacklist a contractor for refusing to loosen its own product safeguards, and that the designation caused it substantial reputational and commercial harm.
The D.C. Circuit denied Anthropic’s motion to stay the designation on April 8, 2026, and later heard oral argument on the petition for review. Meanwhile, in the district court, Judge Rita F. Lin held a hearing on cross-motions for summary judgment on July 30, 2026, and on August 27, 2026, ruled for Anthropic, holding that the designation was unconstitutional retaliation for protected speech, violated due process, and was arbitrary and capricious agency action. The government is expected to appeal that judgment, while the separate D.C. Circuit petition over the § 4713 designation remains pending.
TIMELINE
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AUG 27, 2026JUDGMENTJudge Lin calls designation ‘illegal and baseless’In her summary judgment ruling, Judge Lin wrote that the broad measures imposed on Anthropic were illegal and baseless and that national security concerns are not a blank check to punish government critics.
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AUG 27, 2026JUDGMENTDistrict court grants summary judgment to Anthropic and enters final judgmentThe court found unlawful First Amendment retaliation, a Fifth Amendment due process violation and arbitrary and capricious agency action, and entered an order of final relief against the Presidential directive, the Hegseth directive and the Section 3252 designation.
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JUL 30, 2026HEARINGJudge Lin hears cross-motions for summary judgment
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MAY 19, 2026HEARINGD.C. Circuit hears oral argument on petition for reviewThe D.C. Circuit heard oral argument on Anthropic’s petition challenging the Pentagon’s supply-chain risk designation under federal procurement risk statutes.
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APR 8, 2026PROCEDURALD.C. Circuit oral argument scheduled for May 19After denying the stay motion, the D.C. Circuit set oral argument in the petition for review for May 19, 2026.
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APR 8, 2026PROCEDURALD.C. Circuit denies Anthropic’s motion for a stay pending review
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MAR 9, 2026FILINGAnthropic sues in N.D. Cal. and petitions the D.C. Circuit over the supply-chain risk designation
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FEB 27, 2026OTHERHegseth directs supply-chain risk designationSecretary of War Pete Hegseth issued a public directive instructing the Department of War to designate Anthropic as a Supply-Chain Risk to National Security.