After the non-destructive cross-examination is completed, then the questioners should shift to short, carefully phrased, and sharp questioning about such areas of interest as the following:
When did Mueller learn there was no collusion with Russia?
Did he delay announcing that there was no collusion? If so, why?
Did he drag out the investigation in the hope that the president, under constant and unremitting accusations of treason, would crack and submit to interrogation by Mueller’s Hillary acolytes? In other words, did Mueller prolong the investigation in the hope of luring the president into a General Flynn-style perjury trap?
Why did he hire and then fire Special Agent Peter Strzok? Was Strzok terminated because of his demonstrable hatred of the president?