This is a response to posts 196 and 197 (the parts regarding obstruction).
Very sorry to burst your fantasy balloon but no one, not even (or especially!) the President, gets to pick and choose which investigations to cooperate with. Chickenshit investigation or not, you don't get to engage in obstruction, PERIOD. There are no exceptions. Regardless of the merits of the thing being investigated, obstruction is illegal, serious, and directly violates the oath of office of the President making it an eminently impeachable offense. Logically, one would think that the more chickenshit the subject of the investigation, the more one would be willing to comply, as there would be nothing for investigators to find at the end of tunnel.
I recommend this lawfareblog page for understanding each of the charges and their necessary individual components: obstructive act, nexus and intent.
The Mueller report describes numerous instances in which President Trump may have obstructed justice. A few days ago, I threw together a quick spreadsheet on Twitter
www.lawfareblog.com
I get that you feel Trump was persecuted - and to some extent he was, I think, though it seems to me that the same people who are upset by that were perfectly happy to sit through eight years of similar persecution of Obama. Can anyone say "birtherism?" But unreasonable or not, the investigation was official and uncovered some serious issues around Russian influence in our elections (see the bi-partisan report by the Senate Intelligence Committee).