Happy to report a great win for the ACLU in U.S. v. Katzin. From the decision issued today by the Third Circuit Court of Appeals:
The instant case … calls upon us to decide two novel issues of Fourth Amendment law: First, we are asked to decide whether the police are required to obtain a warrant prior to attaching a GPS device to an individual’s vehicle for purposes of monitoring the vehicle’s movements (conduct a “GPS search”). If so, we are then asked to consider whether the unconstitutionality of a warrantless GPS search may be excused for purposes of the exclusionary rule, where the police acted before the Supreme Court of the United States proclaimed that attaching a GPS device to a vehicle constituted a “search” under the Fourth Amendment. For the reasons discussed below, we hold that the police must obtain a warrant prior to a GPS search and that the conduct in this case cannot be excused on the basis of good faith. Furthermore, we hold that all three brothers had standing to suppress the evidence recovered from Harry Katzin’s van. We therefore will affirm the District Court’s decision to suppress all fruits of the unconstitutional GPS search.
You can access the full opinion here.