Reports have suggested that the Sinaloa cartel financed Andrés Manuel López Obrador's 2006 presidential campaign ...

Vicente Zambada Niebla, would continue as his attorney. Pérez's dual role, representing both father and son, has drawn scrutiny as Vicente has cooperated with U.S. authorities in a separate case.

Sinaloa Cartel leader "El Mayo" Zambada says he was flown to a U.S. arrest by force. Mexico has arrested a man who may have ...

Zambada's lawyer Frank Perez has also represented his son, Vicente Zambada Niebla, who prosecutors say could testify against him at trial. Zambada Niebla previously testified against Joaquin "El ...

At Guzmán's trial, Vicente Zambada recounted how his father and Guzmán ran the cartel together. At one point, he described corrupt Mexican politicians asking whether the syndicate could help ...

At Guzmán's trial, Vicente Zambada recounted how his father and Guzmán ran the cartel together. At one point, he described corrupt Mexican politicians asking whether the syndicate could help ...

In the escalating war among rival factions of Mexico's Sinaloa cartel, sons of Joaquín "El Chapo" Guzmán are suspected of ordering the destruction of elaborate mausoleums that belong to rival families ...