The Drug Dealer, the Narc, and the Very Tiny Constable: Reflections on <em>United States v. Jones</em>

On January 23, 2012, the Supreme Court held unanimously that the installation and use of a GPS tracker on a suspected drug dealer’s Jeep constituted a search under the Fourth Amendment. The outcome had been fairly well foreshadowed: At oral argument, the Justices had seemed perturbed by the thought that police could put trackers on cars—even the Justices’s own cars—seemingly at will…