Anthropic Sues Pentagon Over National‑Security Blacklist as Judge Questions Scope of Trump‑Ordered Ban
Anthropic has sued the Pentagon over a Trump‑era national‑security blacklist and related actions — including Trump’s ban, Defense Secretary Pete Hegseth’s contractor restrictions, and a supply‑chain‑risk designation — and at a March 24 hearing U.S. District Judge Rita Lin called the department’s treatment “troubling,” questioned whether the measures were narrowly tailored, and suggested the Pentagon could simply stop using Anthropic’s Claude if that were the concern. Anthropic is seeking preliminary relief to restore the status quo as of Feb. 26 by pausing the designation, blocking enforcement and rolling back actions, while the Pentagon says Anthropic seeks an “operational veto” and argues the company controls Claude in ways it sees as risky — a claim Anthropic disputes — and the judge expressed surprise that the Pentagon contends public blacklist posts are not legally binding.
📌 Key Facts
- At a March 24 hearing, U.S. District Judge Rita Lin called the Pentagon’s treatment of Anthropic "troubling" and said, "I don't know if it's murder, but it looks like an attempt to cripple Anthropic."
- Judge Lin criticized three Trump‑era actions — Trump’s ban on Anthropic, Defense Secretary Pete Hegseth’s requirement that Pentagon contractors cut commercial ties, and the supply‑chain‑risk designation — as not well tailored to the stated national‑security concern, noting the Pentagon could simply stop using Claude if the issue were chain‑of‑command integrity.
- The Pentagon’s lawyer argued that Trump and Hegseth’s blacklist social‑media posts are not legally binding; the judge said she found that "pretty surprising" because the statements are "front and center" in the lawsuit.
- Anthropic is asking the court for preliminary relief to effectively restore the status quo as of Feb. 26 by pausing the designation, blocking enforcement, and rolling back actions already taken.
- The Pentagon argues Anthropic is seeking an "operational veto" over Defense Department decisions and says Anthropic has control over Claude’s availability and performance in ways it views as dangerous in sensitive operations; Anthropic disputes that characterization.
📰 Source Timeline (2)
Follow how coverage of this story developed over time
- At a March 24 hearing, U.S. District Judge Rita Lin called the Pentagon’s treatment of Anthropic 'troubling' and said, 'I don't know if it's murder, but it looks like an attempt to cripple Anthropic.'
- Judge Lin criticized three Trump‑era actions — Trump’s ban on Anthropic, Defense Secretary Pete Hegseth’s requirement that Pentagon contractors cut commercial ties, and the supply‑chain‑risk designation — as not well tailored to the stated national‑security concern, noting the Pentagon could simply stop using Claude if the issue were chain‑of‑command integrity.
- The Pentagon’s lawyer argued that Trump and Hegseth’s blacklist social‑media posts are not legally binding, an argument the judge said she found 'pretty surprising' because the statements are 'front and center' in the lawsuit.
- Anthropic is asking the court for preliminary relief that would effectively restore the status quo as of Feb. 26 — before the public blacklist announcements — by pausing the designation, blocking enforcement, and rolling back actions already taken.
- The Pentagon argues in filings that Anthropic is seeking an 'operational veto' over Defense Department decisions and says Anthropic has full control over Claude’s availability and performance in ways it views as dangerous in sensitive operations, a characterization the company disputes.