not trying to flame or anything but I would classify them as "sharper" than a dull knife!
Sure, big coc and meth busts, big drug operations sometime but they miss everything and are crooked as heck, they do it and are funded well so to screw up shows a lot. Its not a tough job, I think most of us could do it easily and better! The attorneys know they are idiots, the taxpayers do and the U.S attorneys office would just like better stats, currently not what they are getting.
But going afer a user is so funny, when the dea agents are up against attorneys, most of the time they need diapers! They have no clue about reality, just a tough soldier image, whata joke. Just get a decent lawyer and you can shoe them away like flies!