I think it does matter if the evidence is subject to a subpoena by the state senate. But someone who went to law school may be more qualified to answer.
If the state senate’s enforcement power is minimal, than it’s all bark and no bite. Like, on a higher level, when Eric Holder was found in contempt of Congress, shrugged his shoulders, and effectively told them to pound sand.
Did you ever see the movie Amadeus, where Mozart is at a drunken party playing some sort of musical truth or consequences game, and he says to his dour father, “Pick a penalty. There HAS to be a penalty.” I’m concerned that here there may be no effective penalty.
My thoughts, not a qualified legal opinion, of course.