United States v. Katzin

Joint Amicus curiae brief of the American Civil Liberties Union Foundation, the ACLU Foundation of Pennsylvania, the Electronic Frontier Foundation, and the National Association of Criminal Defense Lawyers in support of affirmance of the district court. 

Brief filed: 11/13/2012


United States v. Katzin

3rd Circuit Court of Appeals; Case No. 12-2548

Prior Decision

Decision below, Criminal Action No. 11-226, 2012 WL 1646894 (E.D. Pa. May 9, 2012).


Tracking a car by physically attaching a GPS device to it requires a warrant based on probable cause, without exception. The District Court correctly applied the exclusionary rule because the FBI agents did not rely on binding appellate precedent.

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Ben Wizner, Catherine Crump, and Nathan Wessler, American Civil Liberties Foundation, New York, NY; Witold J. Walczak and Sara J. Rose, ACLU Foundation of Pennsylvania, Pittsburgh, PA; Hanni Fakhoury and Marcia Hoffman, Electronic Frontier Foundation, San Francisco, CA; and Peter Goldberger, Ardmore, PA, for NACDL.