Williams v. United States

Whether, to conduct a warrantless forensic search of a digital device at the border, government agents need reasonable suspicion that the device contains digital contraband (as the U.S. Court of Appeals for the 9th Circuit requires), reasonable suspicion that the device contains evidence of a particular crime with a nexus to the purposes of the border-search exception to the warrant requirement (as the U.S. Court of Appeals for the 4th Circuit requires), reasonable suspicion of any kind of criminal activity (which suffices in the U.S. Court of Appeals for the 10th Circuit), or no suspicion whatsoever (as the U.S. Court of Appeals for the 11th Circuit permits).