Decided

No. 24-624

William Trevor Case v. Montana

from the Supreme Court of Montana

See other cases from Montana.

Docket Entries

Judgment and Mandate Issued.

Adjudged to be AFFIRMED. Kagan, J., delivered the <a href = 'https://www.supremecourt.gov/opinions/25pdf/24-624_b07d.pdf'>opinion</a> for a unanimous Court. Sotomayor, J., and Gorsuch, J., filed concurring opinions.

Argued. For petitioner: Fred A. Rowley, Jr., Los Angeles, Cal. For respondent: Christian B. Corrigan, Solicitor General, Helena, Mont.; and Zoe A. Jacoby, Assistant to the Solicitor General, Department of Justice, Washington, D. C. (for United States, as amicus curiae.)

Reply of petitioner William Trevor Case filed. (Distributed)

Motion of the Solicitor General for leave to participate in oral argument as amicus curiae and for divided argument GRANTED.

Motion of the Solicitor General for leave to participate in oral argument as amicus curiae and for divided argument filed.

Brief amicus curiae of United States filed. (Distributed)

Brief amici curiae of Local Government Legal Center, et al. filed. (Distributed)

Brief amici curiae of Michigan, et al. filed. (Distributed)

Brief amicus curiae of Professor Michael J.Z. Mannheimer filed. (Distributed)

Record received electronically from the Supreme Court of Montana and available with the Clerk.

Brief of respondent Montana filed. (Distributed)

CIRCULATED

Record received electronically from the Anaconda-Deer Lodge District Court and available with the Clerk.

Record requested from the Supreme Court of Montana.

SET FOR ARGUMENT on Wednesday, October 15, 2025.

Brief amicus curiae of Constitutional Accountability Center filed.

Brief amici curiae of American Psychiatric Association, et al. in support of neither party filed.

Brief amicus curiae of Rutherford Institute filed.

Brief amici curiae of Project for Privacy & Surveillance Accountability, et al. filed.

Brief amici curiae of America's Future, et al. filed.

Brief amicus curiae of Montana Association of Criminal Defense Lawyers filed.

Brief amici curiae of Cato Institute, et al. filed.

Brief amici curiae of National Association of Criminal Defense Lawyers, et al. filed.

Brief amicus curiae of The LONANG Institute filed.

Brief of petitioner William Trevor Case filed.

Joint appendix filed. (Statement of costs filed)

Motion to extend the time within which to file the briefs on the merits granted. The time for filing the joint appendix and petitioner's brief on the merits is extended to and including July 30, 2025. The time to file respondent's brief on the merits is extended to and including September 3, 2025.

Motion for an extension of time within which to file the briefs on the merits filed.

Petition GRANTED.

Letter updating counsel of record information for respondents received.

DISTRIBUTED for Conference of 5/29/2025.

DISTRIBUTED for Conference of 5/22/2025.

DISTRIBUTED for Conference of 5/15/2025.

Rescheduled.

DISTRIBUTED for Conference of 5/2/2025.

Reply of petitioner William Trevor Case filed. (Distributed)

Brief of respondent Montana in opposition filed.

Motion to extend the time to file a response is granted and the time is further extended to and including April 4, 2025.

Motion to extend the time to file a response from March 5, 2025 to April 4, 2025, submitted to The Clerk.

Brief amicus curiae of Project for Privacy & Surveillance Accountability filed.

Motion to extend the time to file a response is granted and the time is extended to and including March 5, 2025.

Motion to extend the time to file a response from February 3, 2025 to March 5, 2025, submitted to The Clerk.

Response Requested. (Due February 3, 2025)

DISTRIBUTED for Conference of 1/10/2025.

Waiver of right of respondent Montana to respond filed.

Petition for a writ of certiorari filed. (Response due January 6, 2025)

Application (24A361) granted by Justice Kagan extending the time to file until December 4, 2024.

Application (24A361) to extend the time to file a petition for a writ of certiorari from November 4, 2024 to December 4, 2024, submitted to Justice Kagan.

Parties

William Trevor Case, Petitioner, represented by Fred Anthony Rowley Jr.

Montana, Respondent, represented by Christian Brian Corrigan

Montana, Respondent, represented by Peter Martin Torstensen Jr.

Amici Curiae

American Psychiatric Association, American Psychological Association, and Judge David L. Bazelon Center for Mental Health Law, Amicus Curiae, represented by Aaron M. Panner

America's Future, Gun Owners of America, Gun Owners Foundation, Gun Owners of California, Downsize DC Foundation, DownsizeDC.org, Inc., U.S. Constitutional Rights Legal Defense Fund, and Conservative Legal Defense and Education Fund, Amicus Curiae, represented by William Jeffrey Olson

Cato Institute and Americans for Prosperity Foundation, Amicus Curiae, represented by Matthew P. Cavedon

Constitutional Accountability Center, Amicus Curiae, represented by Brianne Jenna Gorod

Local Government Legal Center, National Association of Counties, National League of Cities, International City/County Management Association, and International Municipal Lawyers Association, Amicus Curiae, represented by Nadia Ann Sarkis

Michael J.Z. Mannheimer, Amicus Curiae, represented by Richard A. Simpson

National Association of Criminal Defense Lawyers, American Civil Liberties Union, and American Civil Liberties Union of Montana, Amicus Curiae, represented by Daniel Benjamin Levin

Project for Privacy & Surveillance Accountability, Amicus Curiae, represented by Gene Clayton Schaerr

Project for Privacy & Surveillance Accountability; Restore the Fourth, Inc., Amicus Curiae, represented by Gene Clayton Schaerr

State of Michigan and Alabama, Alaska, Arizona, Arkansas, Connecticut, Delaware, Florida, Georgia, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Mississippi, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Oregon, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, West Virginia and District of Columbia, Amicus Curiae, represented by Ann Maurine Sherman

The LONANG Institute, Amicus Curiae, represented by Kerry Lee Morgan

The Montana Association of Criminal Defense Lawyers, Amicus Curiae, represented by Mark Simon Davies

The Rutherford Institute, Amicus Curiae, represented by Michael J. Lockerby

United States, Amicus Curiae, represented by D. John Sauer

 
Last updated: April 18, 2026