Earlier quoted context omitted.
Exactly. They write: > “The danger is the creation of an electronic black market, similar to the cash economy,” But how can they avoid it if Bitcoin does work like cash in many aspects and they have no control over it?
In short, despite what many seem to think ?? -> Anything they do / will do / or try to do is simply a hack. The problem they have isn't going away - they'll eventually need increasingly draconian legislation to monitor bitcoin transactions. It will be (almost entirely) up to trust in the long run.
The NSA knows the physical location, email address and browsing history of nearly all US based bitcoin addresses.