• Free Speech & Social Media
      • Privacy & Surveillance
      • Transparency & Democracy
    • Litigation
    • Research
    • Policy
      • Events
      • Reading Rooms
      • Blog
      • Video
      • Podcasts
      • The Knight Institute
      • Board
      • Staff
      • Visiting Scholars
      • Work With Us
      • Support Us
      • Contact
      • Press Room

Legal Filing

Brief of Petitioner (Chatrie)

February 23, 2026

Chatrie v. United States

A Supreme Court case challenging the constitutionality of geofence searches

Filed Under

  • Amicus Brief

Issues

Free Speech & Social Media

Free Speech & Social Media

Featured

New Trump Administration Visa Vetting Policy Targeting Online Trust and Safety Workers is Unconstitutional, Knight Institute Says

   

Privacy & Surveillance

Privacy & Surveillance

Featured

Appeals Court Revives Journalists’ Case Against Spyware Manufacturer NSO Group

Spyware manufacturers should be held accountable in U.S. courts for actions violating U.S. law, Knight Institute says

Transparency & Democracy

Transparency & Democracy

Featured

Trump Administration Concedes That U.S. Researchers May Engage With Sanctioned U.N. Official

Response is a victory for the right of Americans to speak with and hear from international experts about issues of global importance, Knight Institute says

Events

Can Middleware Save Social Media?

National Press Club and Online

Can Middleware Save Social Media?

Learn More

Sign up for news about First Amendment events, research, and litigation

  • Issues

    • Free Speech & Social Media
    • Privacy & Surveillance
    • Transparency & Democracy
  • Litigation
  • Research
  • Policy

  • Public Education

    • Events
    • Reading Rooms
    • Blog
    • Video
    • Podcasts
  • About
  • Press Room
  • Contact
  • Privacy Policy

© 2021 Knight First Amendment Institute. Design by Point Five. Development by Tierra Innovation. Icons by Leandro Castelao.

2020 Webby Award Winner for Law Website