The ranks of Hispanic street gangs in the United States are reinforced by illegal immigrants and their offspring. These gangs often serve as distributors of illegal narcotics sourced from highly dangerous Mexican outlaw cartels.
Total apprehensions of known gang members by the U.S. Border Patrol have been following the pattern of illegal immigration at the southwest border. Approximately one of every thousand illegal aliens caught at the southwest border is recognized as a gang member.
Recent cartel turf wars in Tijuana are reviewed in order to suggest, by way of circumstantial evidence, that a new surge in gang violence in San Diego has resulted from an expansion of Mexican cartel wars northward into U.S. territory.