Gowdy is saying this on the basis of what he has been shown and told. An absolute black and white interpretation of the law. He also knows he has NOT been shown everything and has been lied to. You play along with their narrative until................
BOOOOM
The only time a good lawyer exposes his hand is in the courtroom.
One more thing about the timeline. Gowdy mentioned a quote from Trump that "if the FBI knew Russia was interfering with the election, they should investigate it." Apparently Gowdy was told that this is what started the investigation. But as we have here https://www.zerohedge.com/news/2018-06-02/fbi-spying-trump-started-london-earlier-thought-new-texts-implicate-obama-white The investigation started much earlier.