The US treasury department has put two sons of Mexico's most wanted man Joaquin "El Chapo" Guzman on its drugs kingpin blacklist. The move bars all people in the US from doing business with Ivan Archivaldo Guzman Salazar and Ovidio Guzman Lopez, and freezes any US assets they have. Joaquin Guzman, on the list since 2001, runs the powerful Sinaloa drug cartel. Mexico has seen an explosion of violence in recent years as gangs fight for control of...
