Federal authorities arrested nearly two dozen people associated with the Mexican Mafia and confiscated about 600 pounds of methamphetamine following a three-year investigation.
Investigators say the move disrupted a plan to merge the Mafia with the Mexican drug cartel known as La Familia Michoacana. Here to tell us more about these groups is Sylvia Longmire, author of "Cartel: The Coming Invasion of Mexico's Drug Wars."