Well. This train long ago left the station, but the Mueller investigation never should have happened in the first place. Jeff Sessions never should have recused himself over a perfectly innocuous meeting with a Russian official that took place while he was a member of the Senate Foreign Relations Committee. Rod Rosenstein never should have appointed Mueller on the grounds that the firing of James Comey necessitated it.
And the FBI should never have followed the lead of James Clapper and Harry Reid in ramping up this investigation in the first place.