A federal appeals court upholds DOD's Anthropic blacklisting, finding Claude's integration with DOD systems is “a statutorily covered national-security risk”

A federal appeals court panel in Washington, D.C., on Friday upheld the Pentagon's blacklisting of Anthropic …

CNBC 2026-09-26 Ashley Capoot

Context & Ripple Effects

Anthropic challenged the designation in March, and the litigation produced conflicting interim rulings: a D.C. appeals panel declined to pause the designation in April, while a U.S. judge blocked the Pentagon from enforcing the blacklist in August. The appeals decision resolves that immediate conflict in the Pentagon’s favor.

The ruling matters beyond the parties because it treats Claude’s integration with DOD systems as falling within the national-security risk category specified by statute, giving the Pentagon a judicially validated basis for its designation.

First-order effects

The Pentagon can maintain its supply-chain-risk designation against Anthropic, while Anthropic loses the lower-court protection that had blocked the blacklist.
Claude’s DOD integration is formally treated by the appeals court as a covered national-security risk, making that integration the central constraint on Anthropic’s defense relationship.

Second-order effects

AI vendors seeking DOD deployments face a clearer incentive to structure model access and product controls around Pentagon security requirements, since the designation mechanism has survived appellate review.
DOD gains leverage in negotiations with AI suppliers: disputes over operational safeguards can carry consequences beyond an individual procurement decision when integration is framed as a supply-chain risk.

Third-order effects

The decision strengthens government-gated AI deployment as an institutional model, in which access to sensitive federal systems depends on a vendor’s acceptability under national-security authorities.
If courts continue to read supply-chain-risk statutes this broadly, strategic legitimacy with defense institutions will become a more consequential competitive variable for frontier AI labs.

The trend: Frontier AI deployment is becoming subject to institutional admission controls, with national-security authorities shaping which model providers can participate in sensitive government systems.

Discussion

@dowcto @dowcto on x
The American people elected one Commander in Chief, not a private company, to lead the United States military. AMERICANISM WINS. 🇺🇸
@willchamberlain Will Chamberlain on x
A massive victory for the administration and sanity and a massive loss for Anthropic. Dario has driven the company off a cliff.
@uswremichael @uswremichael on x
The hammer of justice has smashed @AnthropicAI arguments. They are a Supply Chain Risk to the defense industrial base serving the @DeptofWar. Warfighters will sleep better knowing that no private company will insert their opinions in the chain of command. @SecWar was right!
@mattforney Matt Forney on x
I didn't vote for the federal government raping Anthropic to death, but I'll take it. This will completely destroy Anthropic as a company and then their assets can be bought for pennies. I'll say it again: Dario Amodei is worse than Sam Altman.
@beffjezos @beffjezos on x
EAs in shambles.
@benjaminmmurphy Ben Murphy on x
This could plausibly go en banc, and I expect it would almost certainly be reversed if so—either on statutory interpretation grounds, as the dissent would have ruled, or by heightening the degree of scrutiny applied to the less-intrusive-means provision.
@petehegseth Pete Hegseth on x
Confirmed: @AnthropicAI = Supply Chain Risk. The @DeptofWar does what is right for the Country and our Warriors.
@benjaminmmurphy Ben Murphy on x
In administrative law, reviewing courts, even post-Loper, rarely look beyond the four corners of the record when evaluating the propriety of an administrative action. The biggest exception to this, Department of Commerce v. New York, which overturned the first Trump Administratio…
@benjaminmmurphy Ben Murphy on x
First, this is an opinion that is directly in line with several key opinions by Justice Kavanaugh, who remains exceptionally comfortable with deference to the executive post-Loper, especially on factual determinations or national security issues. Judge Katsas reading the less-int…
@benjaminmmurphy Ben Murphy on x
Second, the panel here basically refused to engage in comparative analysis between Anthropic and OpenAI, the Department's chosen replacement vendor. In this paragraph, Judge Katsas essentially says that even if Anthropic couldn't modify an already-deployed model, and even if the…
@hadas_gold Hadas Gold on x
Brutal ruling for Anthropic by DC circuit in the Pentagon supply chain risk case. Anthropic statement: “We respectfully disagree with the court's decision. Another federal court has already held the government's parallel designation unlawful. We remain confident in our positio…
@joellthayer Joel Thayer on x
The D.C. Circuit got it right. As @A1Policy argued in our amicus brief, no company should be able to dictate the terms of war, let alone a rich company with a clear ideological agenda that is developing technology as powerful as AI. That job is reserved for entities accountable t…
@ewess92 Eric W. on x
Judge Katsas's powerful conclusion is worth quoting in full (despite breaking my normal 280-character rule):
@ewess92 Eric W. on x
Read both optinion and dissent, here: https://s3.documentcloud.org/ ...
@benjaminmmurphy Ben Murphy on x
🧵 This is entirely unsurprising. In my view, the majority's statutory interpretation gives 41 U.S.C. § 4713 pretty extraordinary reach with highly curtailed judicial review; that said, the panel's reasoning clearly follows indications from the Court re: deference on national se…
@aagshumate Brett Shumate on x
The D.C. Circuit has upheld @DeptofWar's decision to exclude Anthropic's Claude from its supply chain based on risks to national security.
@charliebull0ck Charlie Bullock on x
This was the expected outcome, given the terrible luck Anthropic had with the panel draw. Anthropic seems to be doing fine despite the SCR designation (although they've certainly lost some business from government and defense contractor clients) so it remains to be seen whether …
@flingjore.com @flingjore.com on bluesky
Court rules that the Pentagon can blacklist AI firm Anthropic as a supply-chain security risk. Judges uphold the contract ban because Claude's hard-coded guardrails block its use for autonomous weapons and mass domestic surveillance.
@evilmagnus @evilmagnus on bluesky
guess who's also not IPO'ing in 2026 now [embedded post]
@justinhendrix Justin Hendrix on bluesky
“The Trump administration can blacklist AI firm Anthropic from all Pentagon contracts, a federal appeals court ruled Friday, in a decision that expands the executive branch's authority to designate U.S. businesses as national security risks.”
r/singularity r on reddit
US appeals court upholds Pentagon's blacklisting of Anthropic

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