Judge blocks Pentagon from blacklisting Anthropic over AI safety guardrails dispute
21 Sources
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Hegseth, Trump had no authority to order Anthropic to be blacklisted, judge says
"Classic First Amendment retaliation." That's how US District Judge Rita Lin described the Department of War's effort to blacklist Anthropic and designate it a supply-chain risk. By all appearances, "these measures appear designed to punish Anthropic," Lin wrote in an order granting Anthropic's
[2]
The Pentagon's culture war tactic against Anthropic has backfired
Last Thursday, a California judge temporarily blocked the Pentagon from labeling Anthropic a supply chain risk and ordering government agencies to stop using its AI. It's the latest development in the month-long feud. And the matter still isn't settled: The government was given seven days to
[3]
US judge sides with Anthropic, says company supply chain risk branding over Pentagon disagreement 'Orwellian' -- Trump slapped AI company with designation after it refused to lower its guardrails for the military
U.S. courts say that the federal government cannot treat companies that disagrees with it this way. A U.S. court has sided with Anthropic and is temporarily blocking the Pentagon from calling the company a supply chain risk. The ruling comes after the AI tech company sued the Department of War for
[4]
Trump administration appeals ruling that blocked Pentagon action against Anthropic over AI dispute
SAN FRANCISCO (AP) -- The Trump administration is appealing a judge's order blocking the federal government from taking punitive measures against artificial intelligence company Anthropic after a dispute with the Pentagon over military use of AI. Department of Justice attorneys filed a notice in
[5]
Court temporarily blocks US government from labeling Anthropic as a 'supply chain risk'
The court has granted Anthropic's request for a preliminary injunction, preventing the government from banning its products for federal use and from formally labeling it as a "supply chain risk," at least for now. If you'll recall, things turned sour between the company and the Trump administration
[6]
Judge blocks Pentagon from labeling Anthropic a national security risk
Serving tech enthusiasts for over 25 years. TechSpot means tech analysis and advice you can trust. What just happened? A federal judge in California has blocked the Department of Defense from designating Anthropic as a national security risk. The ruling provides the company with temporary relief
[7]
Trump administration appeals Anthropic ruling
Why it matters: The appeal escalates a high-stakes fight that could reshape how the government works with AI companies. * The Trump administration isn't giving up its fight against Anthropic any time soon, even as there's been chatter that the deal could get revived. Driving the news: Government
[8]
Judge blocks Trump administration's 'Orwellian' branding of Anthropic
"Nothing in the governing statute supports the Orwellian notion that an American company may be branded a potential adversary and saboteur of the US for expressing disagreement with the government," judge Lin wrote. Anthropic has won an early round in its legal battle against the Trump
[9]
First blood to Anthropic as US judge slams Trump 2.0's 'Orwellian" attempt to cripple the firm as unconstitutional and illegal
The war goes on, but Anthropic has won a significant first battle as a US Judge grants a stay of execution against the Department of War's (DoW) "Orwellian" attempt to brand the US AI champion a national security risk, and ban public sector buyers from using it or anyone who associates with its
[10]
Anthropic wins first round in case against US administration's Claude ban
A US judge did not mince her words in a ruling that described the US administration's designation of Anthropic as a 'suppy chain risk' as 'arbitrary and capricious'. Anthropic has won its first round in the court case it has taken against the US administration's ban on the use of its products in
[11]
Trump administration appeals ruling that blocked Pentagon action against Anthropic over AI dispute
SAN FRANCISCO (AP) -- The Trump administration is appealing a judge's order blocking the federal government from taking punitive measures against artificial intelligence company Anthropic after a dispute with the Pentagon over military use of AI. Department of Justice attorneys filed a notice in
[12]
Anthropic wins major injunction against Pentagon's AI blacklist
A federal judge granted Anthropic an injunction against the U.S. government's "supply chain risk" designation, ordering the administration to rescind the label. The ruling impacts the ability of federal agencies to continue working with the artificial intelligence company and follows a period of
[13]
Trump Administration Appeals Ruling That Blocked Pentagon Action Against Anthropic Over AI Dispute
SAN FRANCISCO (AP) -- The Trump administration is appealing a judge's order blocking the federal government from taking punitive measures against artificial intelligence company Anthropic after a dispute with the Pentagon over military use of AI. Department of Justice attorneys filed a notice in
[14]
Trump admin asks court to reimpose Anthropic supply chain risk designation
The Trump administration has appealed a federal judge's temporary suspension of the Pentagon's supply chain risk designation for artificial intelligence firm Anthropic. The notice of appeal, filed in a California federal court Thursday, was largely expected, coming just one week after U.S.
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US Judge Blocks Pentagon's Anthropic Blacklisting for Now
March 26 (Reuters) - A U.S. judge on Thursday temporarily blocked the Pentagon's blacklisting of Anthropic, the latest turn in the Claude maker's high-stakes fight with the military over AI safety on the battlefield. Anthropic's lawsuit in California federal court alleges that Defense Secretary
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Anthropic Prevails In Initial Ruling, Spotlights 'First Amendment Retaliation'
San Francisco Federal Court District Judge Rita Lin sided with Anthropic in its request for a preliminary injunction in its legal battle against the Trump administration, calling it "illegal First Amendment retaliation." This decision temporarily halts the government's actions to blacklist the AI
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US judge blocks Pentagon's Anthropic blacklisting for now
pen AI and Anthropic logos are seen in this illustration created on September 12, 2025. A US judge on Thursday temporarily blocked the Pentagon's blacklisting of Anthropic, the latest turn in the Claude maker's high-stakes fight with the military over AI safety on the battlefield. Anthropic's
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DOJ Appeals to Restore Anthropic Ban | PYMNTS.com
By completing this form, you agree to receive marketing communications from PYMNTS and to the sharing of your information with our sponsor, if applicable, in accordance with our Privacy Policy and Terms and Conditions. In the case, Anthropic sued to challenge the Defense Department's designation
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Anthropic Gets Injunction Against Trump Administration over Pentagon Mess
Court said classifying it as a supply-chain risk and debarring Anthropic from government use was a case of trampling free-speech protection A US federal judge has supported AI startup Anthropic in its legal battle with the Trump administration over the recent Pentagon fracas that saw it being
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US court halts the Pentagon's 'supply chain risk' tag on Anthropic
A U.S. federal judge has temporarily blocked the Pentagon from blacklisting AI company Anthropic, marking a key moment in an ongoing dispute over how the military can use artificial intelligence, according to a Reuters report. U.S. District Judge Rita Lin ruled that the government's action to
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Federal Judge Blocks Trump's Move to Cut Anthropic From Government Work
Anthropic has won an early legal victory in its fight with the Trump administration after a federal judge blocked a ban on government use of the company's artificial intelligence tools. The order keeps Anthropic products, including Claude, available to US agencies and contractors for now while the
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A federal judge temporarily blocked the Pentagon from designating Anthropic as a supply chain risk after the AI company refused to allow its Claude chatbot to be used for mass surveillance of Americans and fully autonomous weapons. Judge Rita Lin called the government's actions "classic First Amendment retaliation" for Anthropic's public criticism of military AI uses.
Judge Calls Pentagon Actions Against Anthropic "Classic First Amendment Retaliation"
US District Judge Rita Lin granted Anthropic a preliminary injunction blocking federal agencies from complying with directives issued by Donald Trump and Secretary of War Pete Hegseth that sought to blacklist the AI company
1
. The dispute centers on an AI dispute that erupted when the Pentagon demanded Anthropic remove AI safety guardrails preventing the military application of AI for mass surveillance and autonomous weapons3
.
Source: Engadget
In her 43-page opinion, Rita Lin described the Department of War's effort to designate Anthropic as a supply chain risk as punishment for the company's "hostile manner through the press"
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. "Punishing Anthropic for bringing public scrutiny to the government's contracting position is classic illegal First Amendment retaliation," Lin wrote1
. The judge found that officials had no authority to take such extreme actions without considering less restrictive alternatives or offering evidence that Anthropic posed an urgent risk to national security.
Source: CXOToday
Pentagon Used Claude for a Year Without Raising Security Concerns
The Department of War began using Anthropic's Claude chatbot in March 2025 and continued for a year without ever raising concerns that the company's terms limiting certain uses posed a national security risk
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. The government thoroughly vetted Claude before implementation, praised Anthropic publicly, and planned to expand the partnership1
.Defense employees accessing Claude through Palantir were required to accept terms of a government-specific usage policy that Anthropic cofounder Jared Kaplan said "prohibited mass surveillance of Americans and lethal autonomous warfare"
2
. The amicable partnership only changed when the Department of War sought to contract directly with Anthropic and deploy Claude on a military platform with different terms1
.Trump and Hegseth Launched Public Campaign Against AI Company
On February 27, Donald Trump posted on Truth Social referencing "Leftwing nutjobs" at Anthropic and directed every federal agency to stop using the company's AI
2
. Pete Hegseth echoed this directive, announcing he would label Anthropic a supply chain risk—a designation previously reserved for foreign intelligence agencies, terrorists, and hostile actors, never applied to a domestic company1
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Source: Analytics Insight
Hegseth's post also stated that "No contractor, supplier, or partner that does business with the United States military may conduct any commercial activity with Anthropic"
2
. However, the government's own lawyers later admitted that the Secretary doesn't have the power to do that, agreeing with the judge that the statement had "absolutely no legal effect at all"2
.Judge Finds Government Actions "Orwellian" and Arbitrary
Rita Lin determined that what amounted to blacklisting AI company Anthropic violated its First Amendment rights and denied the company due process
3
. "Nothing in the governing statute supports the Orwellian notion that an American company may be branded a potential adversary and saboteur of the U.S. for expressing disagreement with the government," Judge Lin wrote3
.The judge noted that letters sent to congressional committees claimed less drastic steps were evaluated and deemed not possible, without providing any further details
2
. The government also claimed the supply chain risk designation was necessary because Anthropic could implement a "kill switch," but its lawyers later had to admit it had no evidence of that2
.Related Stories
Company Faces Billions in Lost Contracts Despite Injunction Victory
After the Department of War's actions, three trade deals were promptly cancelled, while other potential partners delayed talks
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. Anthropic demonstrated it was already suffering irreparable harms that would only worsen—including losing potentially billions in private and government contracts the company expected to sign over the next five years1
.Despite winning the preliminary injunction, Anthropic remains in a difficult position. The judge granted the government's request for an administrative stay, which delays the injunction from taking effect for seven days, giving the government time to seek an emergency stay from an appeals court
1
. The Trump administration filed a notice of appeal on Thursday4
. Anthropic also has a second case against the designation pending in the U.S. Court of Appeals for the D.C. Circuit4
.Pentagon Official Calls Ruling a "Disgrace" as Culture War Intensifies
Under Secretary of War Emil Michael called Lin's order "a disgrace" and claimed it contained "factual errors" due to the judge's supposed rush to order the injunction
1
. Michael argued that disrupting Hegseth's directive could "disrupt" how US military operations are conducted1
.However, Rita Lin cited a brief filed in support of Anthropic from military leaders who warned that letting the directive stand "will materially detract from military readiness and operational safety"
1
. The case attracted support from unlikely bedfellows, including Microsoft, industry trade groups, rank-and-file tech workers, retired U.S. military leaders, and a group of Catholic theologians4
.What began as a contract dispute escalated into what observers describe as a culture war because the government disregarded existing processes and fueled conflict with social media posts that contradicted positions taken in court
2
. Meanwhile, OpenAI has struck a deal with the Pentagon to deploy its AI models on the military's classified network3
, positioning itself as an alternative partner willing to work within the government's preferred terms.References
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