Mexican group Los Alegres del Barranco have seen their US visas cancelled after displaying images of cartel chiefs Joaquín "El Chapo" Guzmán and Nemesio "El Mencho" Oseguera Cervantes on stage at a show in Guadalajara. The show, which celebrated the cartel chiefs, has triggered an investigation in Mexico, criticism from President Claudia Sheinbaum, and legal scrutiny.