Sheng Thao, the former mayor of Oakland, and three others have been indicted for a slate of federal charges including conspiracy and bribery. The indictment, which was unsealed and announced in California on Friday, is the culmination of an investigation led by the FBI, the US Postal Inspection Service, and the US Internal Revenue Service. Also charged in the indictment were Andre Jones, Thao’s longtime romantic partner, and David and Andy Duong, a father-son business duo who own Cal Waste Solutions, the company that picks up the recyclables of Oakland’s more than 436,000 residents. The foursome are accused of orchestrating