Can state police track drivers everywhere they go via hundreds of license plate cameras? A new lawsuit says that Illinois’ widespread use of such cameras—called automatic license plate readers (ALPRs)—violates the Fourth Amendment’s prohibition against unreasonable searches because it breaches citizens’ reasonable expectations of privacy. The complaint—filed by two residents of Cook County, Stephanie Scholl and Frank Bednarz, in the U.S. District Court for the Northern District of Illinois on May 30—names the Illinois State Police (ISP), ISP Director Brendan F. Kelly, Illinois Attorney General…