Anthropic has cleared a major legal barrier in its fight with the Pentagon. On August 28, 2026, a federal judge in California ruled that the Trump administration’s designation of the AI company as a supply chain risk was illegal, finding violations of both the First and Fifth Amendments.
The decision challenges the government’s effort to cut Anthropic off from federal agencies and gives the Claude maker a path toward rebuilding its relationship with the Department of Defense. That path matters as Anthropic marches toward a near-record IPO and looks for business opportunities that the designation had shut down.
A Judge Calls the Pentagon Label Retaliation
U.S. District Judge Rita Lin said Defense Secretary Pete Hegseth’s decision to label Anthropic a national security risk amounted to “unlawful retaliation” under the First Amendment. Her ruling connects the designation to Anthropic’s criticism of the government and its refusal to remove certain safety limits from its AI models.
Earlier this year, Hegseth and President Donald Trump labeled Anthropic a supply-chain risk and ordered every federal agency, including agencies outside defense, to stop working with the company. The action followed a dispute over Anthropic’s hard lines on safety guardrails that would allow the Pentagon to use its models for fully autonomous weapons and mass surveillance of American citizens.
The Pentagon denied that it would use Anthropic models for anything except lawful purposes. It also alleged that Anthropic could try to control the military’s use of models that the government had bought and paid for, creating a direct clash over who would set the limits after the technology entered government systems.
Lin said the government’s “words and deeds confirm that the challenged actions were based on a desire to make a public example out of Anthropic for its ‘arrogance’ in criticizing the government.” Her ruling also pointed to a gap between the supply chain label and other government actions involving the company.
The Government’s Actions Did Not Match Its Label
Lin pointed to Defense Secretary Pete Hegseth’s proposition to apply the Defense Production Act to Anthropic, the Department of Defense continuing to pursue a contract with the company, and the government collaborating with Anthropic’s new cybersecurity model, Mythos.
Those actions, taken alongside the supply chain designation, formed a central part of the court’s review. Lin also said Anthropic “undisputedly lacks” any backdoor access to its technology once it hands that technology over to the Department of Defense.
That point cuts into the government’s claim that Anthropic could control military use of models after purchase. The court found that the broad response to the dispute could not stand simply because officials invoked national security.
“The broad measures imposed on Anthropic were illegal and baseless,” Lin wrote. She also stated, “The empty invocation of national security is not a blank check to punish and retaliate against government critics.”
Anthropic Still Has a Second Case Ahead
The ruling also found that Anthropic was denied due process, as required under the Fifth Amendment. The company filed two complaints against the Department of Defense in March, one in California and one in Washington, D.C.; the D.C. suit is still ongoing.
An Anthropic spokesperson said, “We welcome the court’s ruling that this supply chain risk designation was unlawful.” The California decision gives the company a strong result in its challenge, but the continuing D.C. case means the broader dispute has not ended.
Anthropic now faces a strategic opening. If it can reestablish ties with the Pentagon, the company could pursue additional business opportunities that the designation cut off, while the government must contend with a ruling that rejects its treatment of Anthropic as a supply chain risk.
The case also puts a bright line around a critical question for the AI industry: how far can government agencies go when a technology company refuses to remove safety guardrails? Judge Rita Lin’s answer is direct. National security claims do not erase constitutional protections, and government criticism cannot become a reason to punish a company.
Based on
