You do know these answers are out there don’t you?
Here is Mueller’s statement on why he wasn’t charged.
"Based on Justice Department policy and principles of fairness, we decided we would not make a determination as to whether the President committed a crime. That was our decision then and it remains our decision today."
The Justice Department and The Office of Legal Counsel have a long-standing policy that prevents federal prosecutors from charging the president with a crime.
Also, Jerold Nadler asked Mueller directly whether Donald Trump had been accurate to claim he was "exonerated" by the special counsel report, to which Mr Muller replied with an emphatic "No".