Finding yourself struggling with Mexican Cartels in drug cases and intelligence? There are several resources available to familiarize yourself with the various Transnational and Drug Trafficking Organizations operating on both sides of the border. The major groups include the following in no particular order: Tiajuana Cartel, Los Zetas (Beltran Leyva), Sinaloa Cartel, Juarez Cartel,Gulf Cartel, and La Familia. There are currently several areas in dispute with the different cartels engaged in violent struggles to maintain or expand their influence. Just yesterday, over 40 people were killed in a prison riot that occurred between members of the Zetas and Gulf Cartels.
For a good general summary of the Cartels, the New York Times ran this piece last fall. In addition, Longmire Consulting has a good blog and website that has a breakdown of each of the major groups and their spheres of influence. The National Drug Threat Assessment, available from the DEA (here) contains chapters regarding Transnational Drug Trafficking Organizations as well. Depending on the nature of your case, it may be advisable to seek an expert especially in a major drug or RICO prosecution.