I think they are a few organisational steps away from something truly terrifying. That will be when the NSA just hand over the 'graph' dataset of all the drug dealers to the FBI/local police. As it stands they have to have a clue, e.g. a name before they can get particulars. So policing is still 'hampered' conveniently for those that use drugs. So long as their network does not arouse the suspicions of the police then there need not be any suspicions.

However, if the complete 'graph' is just handed over then even the most discreet of networks could be uprooted, all chains and links identified, geolocated too. This could be done. All it would take is a Donald Trump to take it up another level. He could get a lot of votes by promising to use NSA data to eradicate drugs from America once and for all, with no drug-dealer left behind...

Aside from the 'where next' aspects, as it is, I found this article to be quite shocking. So much for the 'land of the free'.