CDT Calls for SCOTUS to Reject Overbroad Geofence Warrant in New Amicus Brief CDT, along with the Brennan Center for Justice, Defending Rights & Dissent, and the Surveillance Technology Oversight Project, is calling on the Supreme Court to reject an overbroad geofence warrant that was used to gather location data on everyone in an area. Our brief in Chatrie v. United States argues that electronic ...