What's At Stake in Today's Geofence Oral Argument?
Later today, the Supreme Court will hear oral argument in Chatrie v. United States . The case presents the question "whether the execution of the geofence warrant violated the Fourth Amendment." Wait. The execution of the warrant? The warrant? And what's a geofence? The case is on cert from a Fourth Circuit en banc decision that my co-blogger Professor Matthew Tokson discussed and critiqued in July 2024 . Here is how he introduced the case: On May 20, 2019, a man wearing a fisherman’s hat and a traffic vest robbed a bank in Midlothian, Virginia. Unable to identify the robber, police served Google with a geofence warrant—a warrant targeting all cellphone users in a certain area at a certain time. They obtained information on several cellphones in the area of the bank at the time of the robbery, including the phone of Okello Chatrie, who was eventually identified as the culprit. Chatrie challenged the validity of the geofence warrant, arguing that it was unconstitutiona...