Teh Feds have figured this out for the most dangerous, most powerful and largest criminal organizations in the country. Surely they can figure it out for for street criminals in New Orleans. It's just thow many resources and how much money they decide to use to protect witnesses and clean this mess up. The Gulf Coast faced the same problem with the Dixie Maffia until the Sherry murders when the Feds decided to put the resources into it and shut it down at all costs. It can be done.