Do we need the NSA?

[Rev. Rye]

I think every nation needs some sort of intelligence agency. They only become a problem when they start acting outside the law. So yes, the NSA is probably needed but they also need more regulation.

The thing is, we already have three famous ones: The FBI, the CIA, and the NSA. The FBI spies on American criminals, the CIA gathers intel on other governments (and occasionally overthrows them), and the NSA spies on everyone else.

Officially, there are 16 intelligence agencies in the USA, and bizarrely, the FBI isn't actually one of them. Some of them make since, since they're for specific branches of the military, but there still seems to be a lot of room for merging and reforming. Granted, I don't know the ins and outs the whole United States Intelligence community, and I probably would get jailed if I did and talked about them here, but there seems to be a lot of fat that needs to be cut and shit that needs to be rearranged.

Why is it not potentially a good idea to take the good stuff about the NSA (like the cryptography and all the stuff they hire math majors for), make it part of the FBI's job, and give up the "National Security Agency" name and all the "spying on what everyone is doing, even if they're not criminals" thing?