Well, otoh, Nunes is only privy to anything called evidence by virtue of his position on a Committee, as it’s chairman.
Nunes has a Top Secret Security clearance; and I know what that is because years ago, I had one myself.
You are allowed to know a lot of information; you just are not allowed to tell anyone else who does not have the same clearance.
That’s why Nunes went to the WH; it was the only place where there was the same clearance level.