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Legion v. United States

U.S. District Court for the District of Columbia · Case No. 1:26-cv-02225

We’ll post updates here as the case unfolds. Check back.

  1. Founder’s Letter

    No company should have its lawful work switched off by a phone call.

    Friends,

    On June 12th, the federal government gave Anthropic ninety minutes to shut down two of the most capable AI models in the world. No law on the books. No notice. No evidence. No hearing. Just a letter from the Bureau of Industry and Security at the U.S. Department of Commerce – and by 10 p.m. the models were dark.1

    It’s worth understanding how that decision got made. Over a single evening, a handful of Anthropic’s own competitors got senior officials on the phone, warning that the model could be talked into reviewing software for security flaws2 – something nearly every AI model on the market will do, and something the model was built to do for defenders.3 No study, no outside experts, no chance for anyone to respond. By the next night the letter had gone out. That was the whole of it: a few calls from interested parties, and a letter to make it official.

    One of those models was at the center of what we’re building at Legion. Legion is a legal-tech company: we use AI to draft fully formatted pleadings, discovery, and motions for litigators. The premise is simple – one good lawyer should be able to take on the many, and our tools make that possible. By enabling attorneys to draft in minutes what used to take days, we help attorneys deliver better outcomes for clients at a price ordinary people can afford. That’s what the June 12th shutdown reached into.

    Given everything we have riding on this, you might expect me to argue that AI carries no risk and the government should keep its hands off entirely. I’m not.

    The risk is hard to measure – but that is exactly why you need process. You bring in the experts. You sit down. You transparently build a way to assess the danger before you act on it.

    What happened here was the opposite of that. No experts. No measurement. No transparency. Just a decree from on high, aimed at one company’s two models – while the same capability the government pointed to stays available in competing products it didn’t touch.4

    Laws and procedures are what stand between us and power exercised on a whim, against whoever’s inconvenient. And the record here is hard to read any other way. Right before the shutdown, the President signed an executive order that expressly provided that nothing in it authorizes a mandatory licensing, preclearance, or permitting requirement for releasing AI models.5 Ten days later, the government did exactly that – to one company. The same company a court had already found this administration retaliated against once before.6

    When the people in charge claim a power they themselves disclaimed in writing, and aim it at a single target, this is discretion without limit and without accountability – and that’s a threat to our constitutional freedoms.

    It’s also a threat to America’s ability to lead in AI. Businesses don’t fear hard rules; they fear chaos. Clear rules and predictable process are what make it safe to build here. Rules made on a whim – or worse, ones that hamstring the people doing the building – do nothing but set the country back in a race other nations are sprinting to win.

    What I believe is that this is government overreach. No company, and no person, should have their lawful work switched off by a phone call.

    Legion exists to power the David-versus-Goliath fights so the few could take on the many.

    This time, we’re the few.

    And we’re suing.

    Sincerely,

    Arthur E. Rothrock's signature

    Arthur E. Rothrock, Esq.

    Founder & CEO, Legion

    Sources & notes

    1. 1. The June 12 directive, the ninety-minute deadline, the Commerce/BIS letter, and the worldwide shutdown: Anthropic, “Statement on the US government directive to suspend access to Fable 5 and Mythos 5”; Al Jazeera, “US orders Anthropic to disable AI models for all foreign nationals”. ↩
    2. 2. That the shutdown was set in motion by calls from Anthropic’s competitors to senior officials: TechCrunch, “Amazon CEO reportedly raised Anthropic model concerns before government crackdown”. ↩
    3. 3. That the flagged code-review capability is common to modern models and used by defenders: Anthropic statement (the capability “is widely available from other models (including OpenAI’s GPT-5.5), and is used every day by the defenders who keep systems safe”); CSIS analysis (the vulnerability “is inherent to all modern language models”). ↩
    4. 4. That the same capability remains available in competing products the directive left untouched: Anthropic statement (naming OpenAI’s GPT-5.5); Al Jazeera, “US asks Anthropic to block global access to top AI models: Why it matters”. ↩
    5. 5. The June 2, 2026 executive order disclaiming any “mandatory governmental licensing, preclearance, or permitting requirement” for AI models: The White House, “Promoting Advanced Artificial Intelligence Innovation and Security”; Skadden analysis. ↩
    6. 6. That a court already found this administration’s earlier national-security action against Anthropic likely pretextual retaliation: Breaking Defense, “Judge grants Anthropic preliminary injunction” (Judge Lin: the stated reasons “were pretextual” and the “real motive was unlawful retaliation”); Cato Institute. ↩
  2. The Directive

    The Bureau of Industry and Security’s “is informed” letter to Anthropic – the single page that, on ninety minutes’ notice, required a license to make Fable 5 and Mythos 5 available to any foreign person worldwide, going dark that night. (Visual reconstruction, recreated from the letter’s reported verbatim text – not an authentic copy of the original.)

    Your browser can’t display the PDF inline. Open it in a new tab instead.

  3. The Complaint

    The complaint we filed in the U.S. District Court for the District of Columbia, challenging the June 12th directive that shut down two of the most capable AI models in the world.

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  4. Behind the Scenes

    How we drafted the complaint.

    A forthcoming account of how we used Legion itself to draft the complaint – the theory of the case, the sources we pulled, and how it came together. This slot is reserved; the article will be added here.

  5. The Motion

    Alongside the complaint, we moved for a preliminary injunction – asking the court to lift the June 12th shutdown now, before the case is fully litigated, rather than leave the models dark for months while we wait.

    Your browser can’t display the PDF inline. Open it in a new tab instead.

  6. Behind the Scenes

    How we drafted the preliminary injunction.

    A forthcoming account of how we used Legion to draft the motion for a preliminary injunction – the arguments, the record, and the work behind it. This slot is reserved; the article will be added here.

  7. Minute Order

    The court sets a briefing schedule.

    Two days after we filed, Judge Leon ordered a schedule for briefing our preliminary injunction motion: a response from the government, our reply, and a hearing to follow.

    MINUTE ORDER. Regarding plaintiff’s [3] Motion for Preliminary Injunction, it is hereby ORDERED that defendants shall file a response by July 14, 2026. Plaintiff shall file its reply (if any) by July 21, 2026. The Court will hold a hearing on the motion no earlier than the week of July 27, 2026, with the precise date and time to be determined. SO ORDERED. Signed by Judge Richard J. Leon on 6/25/2026.
  8. Rescinded

    The government backed down. On June 30th, the Department of Commerce rescinded its June 12th directive – a license is no longer required to export, reexport, or transfer Fable 5 and Mythos 5, and Anthropic restored access on its platforms.

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  9. Minute Order

    The hearing is set for July 29.

    Before the case was wound down, the court fixed a date, time, and courtroom for argument on our motion for a preliminary injunction – in person, before Judge Leon.

    MINUTE ORDER. It is hereby ORDERED that a hearing on plaintiff’s [3] Motion for Preliminary Injunction is set for July 29, 2026 at 4:00 PM in Courtroom 18 (In Person) before Judge Richard J. Leon. SO ORDERED. Signed by Judge Richard J. Leon on 7/1/2026.
  10. Case Dismissed

    With the June 12th directive rescinded and access restored, the relief we sought was no longer necessary. Following discussions with the Department of Justice, we voluntarily dismissed the case without prejudice – preserving our right to return to court if the government tries this again.

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The tools we used to fight this are yours.

Legion drafted the complaint and the preliminary injunction you just read. Put that same firepower to work on your own case.