From what I can see, it seems like they don't really use Rico on common street gangs? Why not, they definitely commit enough crime and are big enough in scope? Not necessary because the drug and violent crime arrests bring enough time on their own?

It just seems out of character that they don't; we all know how government and media love headlines about 300 count indictments, multi-jusrisdictional task force, etc.

If I get this right, Illinois made it's own Rico act...
http://www.myfoxchicago.com/story/22587034/new-rico-law-leads-to-street-gang-arrests

Or do the feds just not generally prioritize street gangs, leaving only state level prosecutors to bring the charges, and most of the states do not have individually crafted Rico laws?