He could have investigated several threads of evidence without results.
Well he did, and he included them in the report. But only concerning Trump.
See as a prosecutor, it is his job to prosecute or not, period.
(If you'd stuck around to receive a HS diploma that MIGHT have occurred to you.)
I have my diploma, do you?
Mueller had no conflict of interest, that's just moronic conspiracy theorizing by morons.
His number one conflict was his close personal relationship with witness #1 Leaking James Comey.