From the Document: "Terrorists and other organized criminal groups pose a threat to the United States. Over the past year alone, two shootings and one attempted bombing of an airliner occurred that have been considered terrorist attacks. Individuals claiming allegiance to groups that wish to do harm to U.S. interests continue to be of concern to Congress. Also of concern to Congress are criminal activities of other organized groups and the potential nexus between them and terrorist organizations. [...] In recent years, there has been an increase in violence directed at Americans and American economic interests from other organized criminal elements--many with transnational connections--such as drug trafficking organizations, gangs, and criminal syndicates. Drug trafficking organizations (DTOs) are a domestic criminal threat and a significant concern to federal, state, and local law enforcement. [...] A number of street and prison gangs work closely with Mexican DTOs and drug cartels, including the Surenos 13, 18th Street, Mara Salvatrucha (MS-13), the Mexican Mafia in California, the Texas Mexican Mafia (Mexikanemi), Hermanos de Pistoleros Latinos, and the Texas Syndicate in the south Texas area. A number of regional and national gangs, including Asian gangs, are also reported to have transnational connections and be criminally active along the U.S.-Canada border. Growing gang involvement in smuggling operations has long been a concern as a potential domestic security threat."
CRS Issue Statement, IS40358