I have no clue about gangs, or anything related to them first hand. All I know I get from the media. I'm NO expert.
But again we have a boarder issue where Bush (although we love him) is doing the political thing and trying to ride both sides of the fence. CRACK DOWN MR. PRESIDENT! The Latino community will cry, the liberals will have something to scream about, but it's the right thing to do. The Mexican boarder is a security issue. Subtly downplaying it is not in our nations best interest.
I see this as a political issue purely. From a technical and tactical perspective I see no real challenge in sealing up the boarder. With modern sensor technology, aircraft, ground vehicles, NVGs/Thermals, barrier options it should be possible to seal off this area. We can do this even without resorting to draconian methods. I dont think it would even take such a large effort to do. Just no one (Including our Bush) is willing to touch this issue.