Max Mermelstein (1 November 1942 – 12 September 2008) was a drug smuggler for the MedellÃn Cartel in the late 1970s and early 80s, who later became a key informant against the organization.
In the words of James P.
Walsh, the U.S.
Attorney for Los Angeles, Mermelstein "was probably the single most valuable government witness in drug matters that this country has ever known." He became a "weapon for the government".
Reputed to have smuggled 56 tons of cocaine worth $12.5 billion into the United States, Mermelstein was described by his attorney Tom Johnston as "just a nice Jewish guy who got into the wrong industry".