A 34-year-old Bowie man acknowledged in federal court Friday that he participated in a ring that distributed more than 17 million black-market cigarettes, a scheme that prosecutors said cost the government more than $2.6 million in taxes. Chun Chen, who goes by Eddy and owned a carryout restaurant in Maryland, pleaded guilty to conspiracy to commit extortion in U.S. District Court in Greenbelt... The far-reaching probe became public last fall, when then-Prince George’s County Executive Jack B. Johnson (D) and his wife, Leslie, now a council member, were arrested. Jack Johnson was indicted in February on bribery charges. Leslie Johnson...