The Mexican Mafia has been the dominant criminal orginazion for the past 30-40 years in Southern California, currently is and will be for the next 15 to 20 years. Then they will be finished by inner wars or Marafiosi will take over(if you don't know who Marafiosi's are, just ask and I'll post brief information about them).
Also, the Mexican Mafia has worked hand in hand with LCN on the Westcoast. Here's a picture of two EME carnales and a Gambino associate.
Joe Morgan had contacts in NY LCN as well, that's not to be ignored. And with the Mexican Mafia slowly moving towards more "pro" crimes, aka white collar crimes, there's no doubt they're working in collaboration with whoever's left in California from LCN.
