A federal judge ruled that the US government illegally banned Anthropic's products. Judge Rita Lin granted summary judgment to Anthropic on nearly all claims. President Trump and War Secretary Hegseth had labelled Anthropic a supply chain risk in early 2026. They ordered agencies to stop using its products and barred defense contractors from any business with it. The court found the ban retaliated against Anthropic's public criticism, breaching the First Amendment. It also found Anthropic was denied required process under the Fifth Amendment. The government conceded Anthropic has no backdoor access to deployed models. The dispute began when Anthropic refused to drop limits on lethal autonomous weapons and mass surveillance of Americans. The judge rejected Anthropic's separation of powers claim. The court said agencies remain free to choose any AI vendor.
What changed
Federal agencies and defense contractors were barred from using Anthropic products since early 2026.
What it unlocks
Anthropic can challenge and likely undo the federal ban on its products.
- 4-page memo as sole rationale
- two-year deal up to $200 million
- designations issued 27 Feb and 3 Mar 2026
Sources