"...On Friday the Supreme Court decided four cases, including a closely watched Fourth Amendment case, Carpenter v. United States, in which the justices held 5-4 that the government ordinarily needs a warrant to access historical cell-site location information. At Good Judgment, Ryan Adler assesses the crowd’s forecast in the case. At NPR, Nina Totenberg reports that “until now, the prevailing legal theory was that if an individual voluntarily shares his information with a third party — for instance, by signing up for cellphone service — police can get that information without a search warrant,” but that '[o]n Friday, the Supreme Court blew a hole in that theory.' Additional coverage comes from Louise Matsakis at Wired and from Lyle Denniston at Constitution Daily, who reports that '[e]ven as it insisted it was acting narrowly, and spoke of some limits on the reach of the ruling, the Court definitely gave a modern cast to the Fourth Amendment, now 227 years old.' Commentary and analysis come from Curt Levey in an op-ed for Fox News, Krebs on Security, Jon Schuppe at NBC News, Erica Goldberg at PrawfsBlawg, and Garrett Epps at The Atlantic..."