A coalition including the Cato Institute, the National Association of Criminal Defense Lawyers and the Institute for Justice are backing Megaupload founder Kim Dotcom's attempt to vacate a forfeiture order that turned over his bank accounts, cars and other property to the government. “The federal government’s aggressive use of forfeiture poses a grave threat to property rights and can cause irreparable injury when property is forfeited without any hearing,” the groups write in legal papers filed on Thursday, Torrent Freak reports. Dotcom was indicted three years ago for criminal copyright infringement, but has not yet been extradited to the U.S.