Case: Lemmon v. Trump

COMPLAINT against All Defendants ( Filing fee $ 405 receipt number ADCDC-12254574) filed by Jon Gundersen, Shaun Byrnes, Michael Lemmon, Calder Loth. (Attachments: # 1 Civil Cover Sheet, # 2 Summons DOJ, # 3 Summons EOP, # 4 Summons Haley, # 5 Summons NPS, # 6 Summons Trump, # 7 Summons USAO)(Liu, Wendy) (Entered: 02/19/2026)

1 Civil Cover Sheet

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2 Summons DOJ

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3 Summons EOP

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4 Summons Haley

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5 Summons NPS

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6 Summons Trump

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7 Summons USAO

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NOTICE of Appearance by Allison Marcy Zieve on behalf of All Plaintiffs (Zieve, Allison) (Entered: 02/19/2026)

NOTICE of Appearance by Nicolas Sansone on behalf of All Plaintiffs (Sansone, Nicolas) (Entered: 02/19/2026)

SEALED MOTION FOR LEAVE TO FILE DOCUMENT UNDER SEAL filed by SHAUN BYRNES, JON GUNDERSEN, MICHAEL LEMMON, CALDER LOTH (This document is SEALED and only available to authorized persons.) (Attachments: # 1 Exhibit Notice of Plaintiffs' Addresses, # 2 Text of Proposed Order)(Sansone, Nicolas) (Entered: 02/19/2026)

SUMMONS (6) Issued Electronically as to All Defendants, U.S. Attorney and U.S. Attorney General (Attachments: # 1 Notice and Consent)(zmtm) (Entered: 02/20/2026)

Case Assigned/Reassigned

Case Assigned to Judge Tanya S. Chutkan. (zmtm)

RETURN OF SERVICE/AFFIDAVIT of Summons and Complaint Executed as to the United States Attorney. Date of Service Upon United States Attorney on 2/20/2026. Answer due for ALL FEDERAL DEFENDANTS by 4/21/2026. (Sansone, Nicolas) (Entered: 02/24/2026)

MOTION for Preliminary Injunction by SHAUN BYRNES, JON GUNDERSEN, MICHAEL LEMMON, CALDER LOTH. (Attachments: # 1 Memorandum in Support, # 2 Declaration Declaration of Michael Lemmon, # 3 Declaration Declaration of Shaun Byrnes, # 4 Declaration Declaration of Jon Gundersen, # 5 Declaration Declaration of Calder Loth, # 6 Text of Proposed Order)(Sansone, Nicolas) (Entered: 02/27/2026)

1 Memorandum in Support

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2 Declaration Declaration of Michael Lemmon

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3 Declaration Declaration of Shaun Byrnes

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4 Declaration Declaration of Jon Gundersen

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5 Declaration Declaration of Calder Loth

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6 Text of Proposed Order

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.Order AND Scheduling Order

MINUTE ORDER: Pursuant to LCvR 65.1(c), Defendants shall file an opposition to Plaintiffs' 7 Motion for Preliminary Injunction by 3/6/2026. Plaintiffs shall file a reply by 3/10/2026. Signed by Judge Tanya S. Chutkan on 2/27/2026. (lchs)

MOTION for Leave to File Amicus Brief by MEMBERS OF THE UNITED STATES HOUSE OF REPRESENTATIVES AND UNITED STATES SENATE. (Attachments: # 1 Amicus Brief, # 2 Text of Proposed Order)(Gossett, David) (Entered: 03/05/2026)

MOTION for Leave to Appear Pro Hac Vice :Attorney Name- Alexander Perloff-Giles, Filing fee $ 100, receipt number ADCDC-12282476. Fee Status: Fee Paid. by MEMBERS OF THE UNITED STATES HOUSE OF REPRESENTATIVES AND UNITED STATES SENATE. (Attachments: # 1 Declaration, # 2 Certificate of Good Standing, # 3 Text of Proposed Order)(Gossett, David) Modified on 3/10/2026 to add receipt number (mg). (Entered: 03/05/2026)

AMICUS BRIEF by MEMBERS OF THE UNITED STATES HOUSE OF REPRESENTATIVES AND UNITED STATES SENATE. (zjm) (Entered: 03/09/2026)

Order on Motion for Leave to File Amicus Brief AND Set/Reset Deadlines

MINUTE ORDER: Granting 8 Motion of Members of the United States House of Representatives and United States Senate to file an amicus brief on behalf of Plaintiffs. The Clerk of the Court shall docket [8-1] as Amicus Brief of Members of the United States House of Representatives and United States Senate. To avoid prejudice, the parties' deadlines are extended as follows: Defendants shall file their opposition to Plaintiffs' 7 Motion for Preliminary Injunction by 3/10/2026, and Plaintiffs shall file a reply by 3/13/2026. Signed by Judge Tanya S. Chutkan on 3/5/3036. (lchs)

Notice of Error

NOTICE OF ERROR regarding 9 MOTION for Leave to Appear Pro Hac Vice :Attorney Name- Alexander Perloff-Giles, Fee Status: No Fee Paid.. The following error(s) need correction: Pro Hac Vice filing fee of $100 not paid. Please remit payment using the event Payment of Fee- Pro Hac Vice. (zjm)

NOTICE of Appearance by Michael Sean Sawyer on behalf of All Defendants (Sawyer, Michael) (Entered: 03/10/2026)

Memorandum in opposition to re 7 MOTION for Preliminary Injunction filed by EXECUTIVE OFFICE OF THE PRESIDENT OF THE UNITED STATES, VINCE HALEY, NATIONAL PARK SERVICE, DONALD J. TRUMP. (Attachments: # 1 Affidavit of Frank Lands, Deputy Director for Operations, National Park Service)(Sawyer, Michael) (Entered: 03/10/2026)

1 Affidavit of Frank Lands, Deputy Director for Operations, National Park Service

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REPLY to opposition to motion re 7 Motion for Preliminary Injunction, filed by SHAUN BYRNES, JON GUNDERSEN, MICHAEL LEMMON, CALDER LOTH. (Sansone, Nicolas) (Entered: 03/13/2026)

NOTICE of Appearance by Daniel Luecke on behalf of EXECUTIVE OFFICE OF THE PRESIDENT OF THE UNITED STATES, VINCE HALEY, NATIONAL PARK SERVICE, DONALD J. TRUMP (Luecke, Daniel) (Entered: 03/20/2026)

Notice of Hearing

NOTICE of Hearing: Motion Hearing set for 4/2/2026 at 2:00 PM in Courtroom 9- In Person before Judge Tanya S. Chutkan. (zcll)

NOTICE of Appearance by Bradley Thomas Craigmyle on behalf of All Defendants (Craigmyle, Bradley) (Entered: 04/01/2026)

NOTICE OF SUPPLEMENTAL AUTHORITY by EXECUTIVE OFFICE OF THE PRESIDENT OF THE UNITED STATES, VINCE HALEY, NATIONAL PARK SERVICE, DONALD J. TRUMP (Craigmyle, Bradley) (Entered: 04/01/2026)

RESPONSE re 16 NOTICE OF SUPPLEMENTAL AUTHORITY filed by SHAUN BYRNES, JON GUNDERSEN, MICHAEL LEMMON, CALDER LOTH. (Sansone, Nicolas) (Entered: 04/01/2026)

.Order

Minute Order: The Court will provide access for the public to telephonically attend the hearing on the motion hearing, scheduled for April 2nd, 2026 at 2:00 p.m. The hearing can be accessed through dialing the Toll Free Number: 833-990-9400, Meeting ID: 493633106. It is hereby ORDERED that the attendees using the public access telephone line shall adhere to the following: persons remotely accessing court proceedings are reminded of the general prohibition against photographing, recording, and rebroadcasting of court proceedings (including those held by telephone or videoconference). Violation of these prohibitions may result in sanctions, including removal of court-issued media credentials, restricted entry to future hearings, denial of entry to future hearings, or any other sanctions deemed necessary by the presiding Judge. Signed by Judge Tanya S. Chutkan on 4/1/2026. (zcll)

NOTICE of Appearance by Marissa Ann Piropato on behalf of All Defendants (Piropato, Marissa) (Entered: 04/02/2026)

Motion Hearing

.Order AND Status Report Order AND ~Util - Set/Reset Deadlines

Minute Entry for proceedings held before Judge Tanya S. Chutkan: Motion Hearing held on 4/2/2026 re 7 MOTION for Preliminary Injunction . The Court hears oral argument. Order forthcoming from Chambers. (Court Reporter Lisa Edwards.) (zcll)

MINUTE ORDER: The parties are ORDERED to meet and confer and file a joint status report by 5:00pm on April 3, 2026, indicating whether Defendants will seek National Park Service authorization and abide by applicable congressional approval and statutory review requirements before beginning construction. If applicable, that report shall include a proposed consent order addressing the above question. If the parties are unable to agree on a proposed order, Defendants are directed to submit a declaration by April 7, 2026, from an appropriate representative of the President, Director Haley, or the Executive Office of the President, setting forth the status of any pre-construction activities and whether Defendants will seek National Park Service authorization before initiating construction. Signed by Judge Tanya S. Chutkan on 4/2/2026. (lchs)

Transcript

Extension of Time to File Document

1 Text of Proposed Order

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Status Report

1 Text of Proposed Order

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