Judge Rules Trump Administration’s Blacklisting of Anthropic Illegal

A federal judge ruled late Thursday that the Trump administration violated Anthropic’s First Amendment rights by blacklisting the artificial intelligence company earlier this year, according to court documents and reporting from Politico.

California-based U.S. District Judge Rita Lin issued a 59-page order on August 27, 2026, finding that Pentagon Chief Pete Hegseth broke the law when he designated Anthropic as a supply chain risk to national security. According to coverage by Politico, Judge Lin wrote that the administration’s actions amounted to unlawful retaliation in violation of the First Amendment and that the company was denied due process under the Fifth Amendment.

The legal dispute stems from actions taken earlier this year after Anthropic asserted that its technology should not be used for fully autonomous weapons or mass domestic surveillance. In response to those positions, Trump administration officials issued directives requiring all other Pentagon contractors to stop doing business with the artificial intelligence firm. Administration officials have argued that the U.S. military must maintain unrestricted access to artificial intelligence for all lawful purposes.

Legal Findings and Administrative Procedure Act Violations

Judge Lin concluded that the Department of Defense violated the Administrative Procedure Act alongside its constitutional violations. According to the court order cited by Politico, the judge formally overturned Hegseth’s directive targeting the company’s vendor relationships.

“Though the Department of War is undisputedly free to select the AI vendor of its choice, the evidence demonstrates that the broad measures imposed on Anthropic were illegal and baseless,” Judge Lin wrote in the 59-page ruling. The decision largely finds in favor of Anthropic, which filed its lawsuit in March.

Anthropic alleged in its court filings that public disparagement and official directives by Trump administration officials violated its free speech and due process rights. The company’s initial lawsuit paved the way for Thursday’s substantive ruling, though separate legal proceedings continue to unfold in the federal court system.

Corporate Response and Ongoing Legal Battles

Representatives for Anthropic welcomed the federal court’s decision late Thursday while emphasizing a desire to continue working alongside federal authorities.

“We welcome the court’s ruling that this supply chain risk designation was unlawful. We remain focused on working productively with the government to harness AI for our national security so all Americans benefit from this technology.”

Anthropic spokesperson

While the California federal court order invalidates the supply chain risk designation and associated Pentagon directives, the legal conflict between the company and federal regulators remains active on multiple fronts. According to reporting by Politico, a second lawsuit filed by Anthropic in the U.S. Court of Appeals for the District of Columbia Circuit is still ongoing. The Pentagon did not immediately respond to requests for comment following the release of Judge Lin’s order.