Ismael ‘El Mayo’ Zambada, alleged Mexican kingpin, pleads not guilty to US charges

Mexico’s Security Minister Rosa Icela Rodriguez informs of the detention of Joaquin Guzman Lopez, El Chapo Guzman’s son, and Ismael “El Mayo” Zambada Friday during a press conference at the National Palace, in Mexico City. (REUTERS/Henry Romero)

Ismael “El Mayo” Zambada, the notorious alleged co-founder of the Sinaloa Cartel, pleaded not guilty to U.S. drug charges on Friday after he and a son of a Mexican drug lord were arrested in Texas in a dramatic achievement for U.S. law enforcement that could usher in a seismic shift to Mexico’s criminal landscape.