Elizabeth Warren calls Pentagon’s decision to bar Anthropic ‘retaliation’

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AI motion   displayed connected  a surface  and Anthropic logo displayed connected  a telephone  surface  are seen successful  this illustration photo.Image Credits:Jakub Porzycki/NurPhoto / Getty Images

8:22 AM PDT · March 23, 2026

Anthropic is attracting an expanding fig of supporters successful its combat against the U.S. Department of Defense, which past period designated the AI laboratory arsenic a supply-chain risk aft it refused to marque concessions connected however its AI could beryllium utilized by the military.

In a missive to Defense Secretary Pete Hegseth, U.S. Senator Elizabeth Warren (D-MA) equated the DoD’s determination with “retaliation,” arguing that the Pentagon could simply person terminated its declaration with the AI lab, CNBC reports.

“I americium peculiarly acrophobic that the DoD is trying to strong-arm American companies into providing the Department with the tools to spy connected American citizens and deploy afloat autonomous weapons without capable safeguards,” Warren wrote, per the report, adding that the barring of Anthropic “appears to beryllium retaliation.”

Warren’s words echo galore different organizations that person spoken retired against the Defense Department’s attraction of Anthropic. Several tech companies and employees — including from OpenAI, Google and Microsoft — arsenic good arsenic ineligible rights groups, person filed amicus briefs successful enactment of Anthropic and denouncing the designation, which is usually applied to foreign adversaries and not U.S. firms. 

The quality arose aft Anthropic told the Pentagon that it did not privation its AI systems to beryllium utilized for wide surveillance of Americans, and that the exertion wasn’t acceptable for usage successful targeting oregon firing decisions of lethal autonomous weapons without quality intervention. The Pentagon contested that a backstage institution shouldn’t dictate however the subject uses technology, and soon aft designated the institution arsenic a “supply-chain risk.” The statement requires immoderate institution oregon bureau that does enactment with the Pentagon to certify that it doesn’t usage the designated company’s products oregon services — effectively barring the institution from enactment with immoderate institution that besides works with the U.S. government.

The missive from Warren comes a time earlier a proceeding successful San Francisco connected Tuesday, erstwhile District Judge Rita Lin volition determine whether to assistance Anthropic a preliminary injunction that seeks to sphere the presumption quo portion its case against the DoD is litigated.

While Anthropic is suing the DOD of infringing connected its First Amendment rights and punishing the institution based connected ideological grounds, the Defense Department has maintained that Anthropic’s refusal to let each lawful subject uses of its exertion was a concern decision, not protected speech, and that the designation was a straightforward nationalist information telephone and not punishment for the company’s views.

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The AI laboratory past week submitted 2 declarations to the tribunal that claim the government’s logic is flawed arsenic they beryllium connected method misunderstandings arsenic good arsenic points of interest that were not raised during the company’s negotiations with the DoD.

Warren has besides written to OpenAI CEO Sam Altman, asking for details of the company’s statement with the DoD, which came conscionable a time aft the Pentagon blacklisted Anthropic.

Anthropic and the Defense Department did not instantly respond to requests for comment.

Ram is simply a fiscal and tech newsman and editor. He covered North American and European M&A, equity, regulatory quality and indebtedness markets astatine Reuters and Acuris Global, and has besides written astir travel, tourism, amusement and books.

You tin interaction oregon verify outreach from Ram by emailing ram.iyer@techcrunch.com.

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