US Judge Rules Pentagon’s Anthropic Blacklist Unlawful, Citing Retaliation

A US federal judge has ruled that the Trump administration acted illegally.

When the Pentagon imposed sanctions on AI company Anthropic, finding that the move was intended to retaliate against the company for publicly challenging the government’s position on the military use of artificial intelligence.

In a 59-page decision issued Thursday, Judge Rita Lin rejected the Pentagon’s justification for designating Anthropic a national security “supply-chain risk”. She said national security concerns cannot be used as a justification to punish companies for criticising the government.

“The empty invocation of national security is not a blank check to punish and retaliate against government critics,” AFP quoted Lin as writing in the ruling.

The judge vacated Anthropic’s supply-chain risk designation and found that the Department of Defense had violated the due process protections of the Fifth Amendment.

The ruling also ordered the Pentagon to withdraw all guidance, directives, communications and instructions issued as part of its action against Anthropic.

What is the Pentagon-Anthropic dispute?

The dispute began after Anthropic, the company behind the Claude AI chatbot, resisted demands from the US military over how its technology could be used.

Anthropic refused to permit Claude to be used for certain forms of mass domestic surveillance or fully autonomous weapons. The company argued that current AI systems are not reliable enough to safely make life-and-death decisions without meaningful human oversight.

The Pentagon took a different position, arguing that private technology companies should not be able to place broad restrictions on the US military’s ability to use AI for national security operations.

The disagreement escalated in February, when the Pentagon designated Anthropic a national security supply-chain risk. The designation restricted the company’s ability to secure certain military contracts and effectively blacklisted it from parts of the defence procurement system.

Anthropic challenged the decision in federal court, arguing that Defense Secretary Pete Hegseth had exceeded his legal authority. The company also warned that losing military business could result in billions of dollars in potential losses, in addition to damaging its reputation.

Why the ruling matters

The court decision represents a significant legal victory for Anthropic and could have wider implications for the relationship between the US government and technology companies supplying AI systems.

The ruling indicates that the government cannot simply invoke national security to penalise a contractor or technology company after disagreements over government policy, particularly when the company has publicly criticised the administration.

Anthropic has maintained that restrictions on autonomous weapons and domestic surveillance are necessary because of the risks associated with increasingly powerful AI systems.

The Pentagon, meanwhile, has sought greater access to advanced AI technology for military applications, including intelligence and battlefield operations.

Anthropic’s unusual supply-chain designation

Anthropic was the first US company to be publicly designated as a national security supply-chain risk under a little-used government procurement law intended to protect military systems from potential foreign sabotage or infiltration.

The designation raised questions about how far the government could go in restricting a domestic technology company over disputes concerning the use of its products.

The latest ruling removes that designation, but Anthropic still faces another legal battle.

The company has a separate lawsuit pending in Washington, DC, challenging another Pentagon supply-chain risk designation. That case could determine whether similar restrictions can be used to prevent Anthropic from obtaining civilian US government contracts.

The broader dispute underscores a growing conflict between Silicon Valley AI companies and the US government over how powerful artificial intelligence should be deployed in national security, surveillance and warfare.