A "ringleader" has been sentenced and several other suspects charged in Illinois in connection with a widespread conspiracy to defraud the federal immigration system by helping noncitizens seek visa protections reserved for crime victims who assist law enforcement.Parth Nayi of Illinois was sentenced Thursday to two years in federal prison for participating in hundreds of staged armed robberies at small businesses and eateries in and around Chicago and helping "coach" the supposed " victims" through plans to apply for U visas in exchange for cash."[Nayi] was the main organizer and at the cente...