http://www.judicialwatch.org/blog/2015/01/meth-smuggling-time-high-mexico-calif-border/
Once the drug gets smuggled through the southwest border, it’s distributed throughout the country, as far away as New York, Georgia, North Carolina, Montana and throughout California. It’s a huge and lucrative business run by violent street gangs in the U.S. In fact, last year ten members of the 18th Street gang, the largest gang in Los Angeles County, were indicted for running a large-scale meth and drug-trafficking business in the area. It turns out that 18th Street gang leaders deported from the U.S. in the 1990s helped spread the gang across Central America and into Mexico, according to news coverage of the case.