I'm not confident that we are in such a position, but I think we're closer than I am comfortable with. Imagine J. Edgar Hoover heading the NSA, "under" a weak president.
I don't think the NSA is an inherently powerful organization.
If they actually were doing all the awful things people keep saying they could do, e.g. congressional blackmail, the person doing those things would be shut down in a heartbeat. Do you honestly think the head of ANY government organization couldn't be dealt with if they went legitimately rogue?
There's plenty of evidence to suggest that, in the sense of things we would be more likely to see if it were the case than if it weren't. Many things from the Snowden docs; parallel construction; statements of congresspeople and courts that they were unaware or misinformed; Clapper flat out lying to Congress and not facing any charges... Nevertheless, I actually don't think it is the case that we are currently in that position; I am just nowhere near as confident of that as I would prefer to be.
If they actually were doing all the awful things people keep saying they could do, e.g. congressional blackmail, the person doing those things would be shut down in a heartbeat. Do you honestly think the head of ANY government organization couldn't be dealt with if they went legitimately rogue?