In one of the largest slavery prosecutions Southwest Florida has ever seen, authorities arrested a sixth suspect Wednesday, charging her with making money off unpaid illegal immigrant farm workers... Vargas, along with her co-defendants, are connected to an Immokalee business operation allegedly designed to hold workers in involuntary servitude and peonage... In the past 10 years, prosecutors have handled several slavery cases, but none as large as this. [refers to Burger King]