I don't believe witnesses are called in grand-jury hearings. A prosecutor simply lays out his case and evidence, and the grand jury votes whether it warrants a trial. Yes, the bar is *very* low for a prosecutor in grand-jury hearings.
I served on a grand jury for a few months (many cases, small rural county) and we heard from cops and a few victims, and lawyers, no witnesses.
Wasnt comey reporting to boente about trump obstruction? Thus witness
Right — but wouldn’t Boente’s involvement in the Mueller investigation (in any capacity) jeopardize the case if he is later called as a witness in the criminal trial?