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No. 25-7141October Term 2025Petition PendingUpdated Sep 3, 2026

Keller v. United States

Thomas Keller, Petitioner v. United States

Illustration for Thomas Keller, Petitioner v. United States
Courtroom sketch, AI-generated · No. 25-7141

Case status

Petition PendingPetition pending

Where it stands

Awaiting an order on the petition

Next
No decision timeline until the Court agrees to hear the case.

What it's about

Thomas Keller asks the Supreme Court to review whether Congress may let the Attorney General define, through regulation, when a registered physician’s prescribing of controlled substances crosses from lawful medical practice into a federal crime. The case is pending; Keller argues that delegations affecting the elements of a criminal offense should face stricter constitutional limits than the usual “intelligible principle” test.

Question presented

Whether the “intelligible principle” test remains the appropriate standard for evaluating delegations of legislative power when the resulting regulations define the elements of a federal crime, or whether the nondelegation doctrine requires a more stringent standard when Congress delegates to the Executive the authority to fix the boundary between lawful conduct and criminal liability.

What happens next

The next step is a scheduling move or a decision on certiorari (whether the Court will hear the case). No decision window is available yet.

Why it matters

The case could affect physicians registered to dispense controlled substances and people prosecuted under federal drug laws. For example, it could change the legal test for deciding whether a doctor's prescribing crossed from medical practice into a crime.

The case raises a broader separation-of-powers question: when may Congress let executive officials set rules that mark the line between legal conduct and criminal liability?

Case file

Docket
25-7141
From
United States Court of Appeals for the Ninth Circuit
Documents
2

Docket activity

3
  • AI analysis generated: Case Briefing

    Sep 3, 2026 · Generated

  • Brief added: Petition

    Mar 20, 2026 · Court records

  • Court Order added: Lower Court Orders/Opinions

    Jan 22, 2026 · Court records

More questions

3
What is at stake in Keller v. United States?
The case asks whether Congress needs to give clearer limits when executive regulations help separate lawful medical prescribing from criminal conduct.
Who could be affected by Keller's case?
Registered physicians who dispense controlled substances and defendants charged under federal drug laws could be affected by the Court's approach.
What happens next in Keller v. United States?
The Court may decide whether to grant certiorari, meaning it will hear the case. Oral argument has not been scheduled.

Sources

Primary materials plus reporting. Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.

Checked Sep 3, 2026Methodology

Primary materials

Context reporting