So with all the attention (advertisement/panic) the NSA has generated, the CIA wants a cut of the cake for themselves? That whole agency disco in the US is so confusing that I have the feeling this has to be the plan all the way or it's some kind of old cold war virus spawning divisions and agencies. Don't they all overlap? Is there enough reality for all of them to spy on?
The NSA is primarily charged with Signals Intelligence, Where as the CIA is Human Intelligence. So it's actually a pretty clear line. They also have their own security clearance process (though they tend to recognize each others in join work). The Department of Homeland security is a bit different, they're charged with domestic operations and support (TSA). The FBI is a Domestic Detective agency for lack of a better…
I agree with the parent; there is substantial overlap in capabilities and responsibilities among the agencies that do intelligence work for the U.S. government.
These overlaps led directly to the mistaken Iraq invasion. DOD and CIA reported very different things about the Iraq WMD program, and the U.S. leadership could choose which one they wanted to believe. Cheney and Rumsfeld convinced Bush to listen to DOD, and we all know how that worked out.