U.S. District Judge Rita Lin heard Anthropic’s motion for a preliminary injunction in San Francisco on Monday, and she did not mince words. After listening to both sides argue over whether the Pentagon’s supply chain risk designation was retaliation for Anthropic refusing to let the military use Claude without guardrails, Lin said what a growing number of observers have been thinking for weeks.
“I don’t know if it’s murder,” she told the courtroom, “but it looks like an attempt to cripple Anthropic.”
The hearing marked the most significant courtroom moment in a dispute that has been escalating since February, when Anthropic refused to grant the Pentagon unrestricted access to Claude for autonomous lethal warfare and mass surveillance of American citizens. That refusal triggered a chain of events that led the Department of Defense to formally designate Anthropic a supply chain risk on March 5. It was the first time an American company received that label. Before Anthropic, the designation had been reserved for foreign adversaries like Huawei.
Lin pressed the government’s lawyers repeatedly on whether the designation was proportional. “What is troubling to me about these reactions is that they don’t really seem to be tailored to the national security concern,” she said. She noted that if the Pentagon’s concern was operational integrity, they could have simply stopped using Claude. Instead, they went further. The designation requires defense contractors including Amazon, Microsoft, and Palantir to certify they do not use Claude in any military work. “It looks like defendants went further than that because they were trying to punish Anthropic,” Lin added.
At one point, Lin characterized the government’s argument as suggesting a company can be labeled a supply chain risk because it is “stubborn” and “asks annoying questions.” She called that a “pretty low bar.”
Anthropic’s lawyer Michael Mongan told the court this was “something that has never been done with respect to an] American company.” The company’s CFO [submitted testimony estimating the financial damage at hundreds of millions to billions of dollars in lost 2026 revenue. More than 100 enterprise customers have contacted Anthropic with concerns about continuing to work with a company the Pentagon has blacklisted.
The government argued the actions were based on Anthropic’s negotiating posture and refusal to comply with military requests, not retaliation for public criticism. But a TechCrunch court filing review revealed that the Pentagon told Anthropic the two sides were “nearly aligned” just one week before Trump declared the relationship over. Lin called the government’s claim that social media posts were not legally binding “pretty surprising.”
This has been a story Laterstack has followed from the beginning, through the supply chain designation, the lawsuit filing, and Silicon Valley’s response. Monday’s hearing felt like the moment the legal system caught up to what the pattern already showed. A company said no to unchecked military AI use. The government’s response looked less like national security and more like a message to every other AI company about what happens when you draw a line.
Lin did not say it was retaliation. She said it “looks like” it. That distinction matters legally. But the fact that a federal judge is openly questioning the government’s motives from the bench, using language like “cripple” and “punish,” shifts the terrain significantly. This is vindication for the argument that the Pentagon overplayed its hand. Not a celebration. The ruling hasn’t dropped. But the trajectory is clear.
Lin said she expects to issue a decision within days. Anthropic asked for a ruling by March 26.
What This Means for Everyday People
If the government can blacklist an American company for refusing to build weapons without safeguards, the precedent reaches well beyond AI. Every defense contractor, every tech company with a government relationship, every firm that might one day say “we won’t do that” now has to factor in the possibility that the answer is financial destruction. The question Lin is weighing isn’t just about Anthropic and the Pentagon. It’s about whether the government can use procurement designations as punishment for companies that push back on how their products are used.