Why wouldn't the current US government be shouting this from the rooftops if it was actually true?
Though judging by the replies, I think Bloomberg needs some really solid sources, so there is probably nothing to it.
Remember the "The telephone companies are routing all our calls and internet data to the NSA" conspiracy.
A bunch of people said that was fake, and there was no way this could happen.
Then more evidence came out, and the same people said there was no way that could happen, its too big of conspiracy and it would have leaked way before then.
Then the government gave the telco's retroactive immunity for spying on the public.