The CIA figured out NOTHING about him.
More intelligence breakdown.We never even had his real name.We had no cooperation from the Germans.CIA never even got to meet with him.Its never cut and dried.
Some in the CIA 'expressed' some doubt based on some german memos,some didnt based on other german intel and the mans ID was hardly debunked immediately.According to Tenet the Germans OKd the intel and in the end it was false....like so much else in this chapter.
If he was so easily dismissed as a fraud by Germany (who was the only possible source for the CIA) why hide him? Why send some messages stating doubt and others expressing faith in his claims?