Just decided: The Supreme Court decided in favor of nightclub owner Antoine Jones, convicted of drug conspiracy based partly on GPS evidence, saying that the federal government needs a warrant when using a GPS device to track someone. Here’s the decision. A key line from Antonin Scalia’s main opinion here: “It is important to be clear about what occurred in this case: The Government physically occupied private property for the purpose of obtaining information. We have no doubt that such a physical intrusion would have been considered a ‘search’ within the meaning of the Fourth Amendment when it was adopted.”