And I would imagine the cartels that have the most presence in Texas are the Gulf cartel and the Zetas.
Ivy, that is correct for east and central Texas. The "Sinaloa / remnants of the Juarez" cartel are present in west Texas, in and around El Paso. I think it is largely understood that the Juarez cartel either went extinct or got adsorbed by the Sinaloa cartel, although recently there have been announcements of the "New Juarez Cartel". Its a big state, and the Mexican DTO's are still fluid - aligned, at war with another, etc.
