Shouldn't a Congressional oversight committee have access to everything at the CIA? Therefore it should be impossible to accuse the committee of improper access since it's their right.
Yeah, they should, except for that pesky 4th amendment, where the committee fucked up what not getting the FISA court to rubber stamp it.
Though the committee could counter that because the information could cross outside of the USA that it's really foreign information anyway and thus doesn't require a warrant.
