Drug kingpin's son: U.S. gave me immunity to run drugs if I gave info on other cartels..

Controversial defence: Vicente Zambada's claim could throw new light on how U.S. authorities deal with Mexican drug cartels

Main man: Vicente's father Ismael Zambada, godfather of the Sinaloa cartel, pictured at a party in 1993

Mexico's most wanted man: Joaquin 'El Chapo' Guzman, who escaped from prison in a laundry truck
Drug kingpin's son: U.S. gave me immunity to run drugs if I gave info on other cartels | click  for  more..