Mexico reels with the aftermath of cartel leader El Mencho's death
Nemesio Rubén Oseguera Cervantes — known as "El Mencho" — was the boss of one of the fastest-growing criminal networks in Mexico, notorious for trafficking fentanyl, methamphetamine and cocaine to the United States and staging brazen attacks against government officials who challenged it. Juan Fernandez and Lesley Marin report.