An interesting review of a piece [pdf] by ex-Army generals Barry McCaffrey and Robert Scales. McCaffrey also served as Drug Czar during the first Clinton administration.
"In effect, the cartels seek to create a `sanitary zone' inside the Texas border -- one county deep -- that will provide sanctuary from Mexican law enforcement and, at the same time, enable the cartels to transform Texas' border counties into narcotics transshipment points for continued transport into the continental United States," Scales tells Battleland. "To achieve their objectives, the cartels are relying increasingly on organized gangs to provide expendable and unaccountable manpower to do their dirty work. These gangs are recruited on the streets of Texas cities and inside Texas prisons by top-tier gangs who work in conjunction with the cartels."
[blog post here]