That's correct. The violence on the US side of the border is no where near what is happening in Mexico.

There are some pretty good sources of information on the cartels, and in my opinion, the best source is Borderland Beat: Borderland Beat.

I have not found a US newspaper or news source that covers the Mexican cartels with any regularity. It would be nice to have a Jerry Capeci or a "Gangland" column for this topic.