In the Supreme Court of the United States, Timothy Ivy Carpenter, petitioner, v. United States of America, respondent [electronic resource] : on writ of certiorari to the United States Court of Appeals for the Sixth Circuit : brief amicus curiae of United States Justice Foundation, Gun Owners Foundation, Gun Owners of America, Inc., Citizens United, Citizens United Foundation, Downsize DC Foundation, DownsizeDC.org, Conservative Legal Defense and Education Fund, the Heller Foundation, and Policy Analysis Center in support of petitioner / Robert J. Olson, counsel of record [and 6 others], attorneys for amici curiae.

At issue is whether the warrantless seizure and search of historical cell phone records revealing the location and movements of a cell phone user over the course of 127 days is permitted by the Fourth Amendment.