Mexican drug lord convicted in killing of DEA agent Enrique 'Kiki' Camarena is freed

Mexican drug lord convicted in killing of DEA agent Enrique 'Kiki' Camarena is freed
DEA Agent Frank Tarentino discusses efforts to combat fentanyl trafficking. Mexican drug lord, Ernesto "Don Neto" Fonseca Carrillo, released after serving 40-year sentence for DEA agent's murder in 1985.