The US has announced sanctions and indictments against 14 Chinese and Canadian firms for importing fentanyl, one of the most sweeping actions yet to target trafficking of the powerful synthetic opiate. Officials from the Department of Justice and the Department of Homeland Security and other agencies announced the actions on Tuesday. The indictments and sanctions target what officials described as a “major China-based syndicate” that sold fentanyl to drug dealers and international cartels, the Associated Press reported. The majority of those indicted are based in China but some are based…