To sidestep the U.S. Constitution’s prohibition against warrantless invasions of private property, federal prosecutors and FBI officials have argued that Geek Squad employees accidentally find and report, for example, potential child pornography on customers’ computers without any prodding by the government. Assistant United States Attorney M. Anthony Brown last year labeled allegations of a hidden partnership as “wild speculation.” But more than a dozen summaries of FBI memoranda filed inside Orange County’s Ronald Reagan Federal Courthouse this month in USA v. Mark Rettenmaier contradict the official line.