I think this has been going on for years. It's not a "risk" at this point, it's a virtual certainty. What is more of a risk, IMHO is the possibility that AQ has joined forces with the gang elements in this country. That presents terrorist infiltrators with built in infrastructure and conduits for obtaining full auto weapons, explosives, legit bank accounts and logistical support: safe houses, food, etc. It is a built in terrain assessment of the target areas. Things that no foreign born terrorist would have access to under any other circumstances. For example, intimate knowledge of law enforcement tactics and response times for the target areas. The possibilities are endless. Gangs get something out it, too. Money I am sure is the first lure. AQ has plenty of that. They will also make a partnership in drug trafficking. Revenge is a huge part of motivation here for the gangs. Gangs are merciless in their desire to exact revenge. They are very nearly as cold blooded as the AQ.
I always knew ole Jerseygirl had a warrior instinct, but I didnt know she pretty good at ops planning..good job jersey! Its a dark skill, but it comes in handy from time to time.
I've been doing some reading lately, and a lot of travel. I've noticed indicators similar to what Exsoldier said in his post.
I think both of you guys are pretty much dead on target, but I have noticed one thing that stands out.
Al Qaeda is apparently having problems recruiting American muslims, and they have to import their own to insure quality control of their operations.
This by no means rules out gang involvement. Instead it addresses the command and control of the individual rank and file terrorists.