A subpoena isn't proof of anything numnuts. Nadless' supoenas are totally optional. No enforcement power and more desperate crying. Now I'll type this slowly so you can understand. Mueller found NO collusion and NO evidence of obstruction. Nadless isn't getting anything from Trump, who has no obligation to cooperate with a blatant fishing expedition. Now go back under your rock, adults are speaking.
On both counts you are wrong. "Collusion" was found, but Mueller didn't feel he had enough for criminal conspiracy. Obstruction based on Mueller's findings and testimony do reveal textbook obstruction. He didn't render the decision because he can't, based on the rules. But Congress can. And 1000 prosecutors now say Trump obstructed. There is no further need to question obstruction, because it was found.
You'd have to be either a liar, or totally misinformed on what obstruction is, an infant child, or totally retarded, not to conclude Trump obstructed justice, based on Mueller's own words in the report.