republicans and in fact many democrats is when you use the sources and methods, oh, if he told you this, you would know too much -- >> right. >> they think that runs old on the republican side. >> we just got bob in, bob, you were an undercover officer with the cia for many, many years. can you testify and still be an undercover officer, still not have your cover blown? >> oh, absolutely. i was called up multiple times to the hill both before the house and senate. i went to a room called a skiff where you can't bucket. the transcripts were kept by one person. yes, operatives can do it and they should do it in this case, and congress can protect their identity and there is only one case i've ever seen the name leak out of a hearing and that was a long time ago and it was really special circumstances. i don't understand why they can't be brought up. >> bob, one argument that folks in the administration make or the state department make is