It would, if it were something that got documented well. Grand jury investigations are secret, so we mostly hear about the results rather than the how, and on t

It would, if it were something that got documented well. Grand jury investigations are secret, so we mostly hear about the results rather than the how, and on the rare occasions something like this happens, it's almost always small town. The highest-profile case I can point you to is somewhat disappointing. A few years ago, a grand jury in Harris County (Houston), Texas kicked the prosecutors out and proceeded to run its own investigation into issues surrounding BAT vans. They didn't return criminal indictments before disbanding, but made clear there were ethical violations. Last I heard, though, the DA's office had succeeded in thoroughly pissing off some local judges and was under investigation by a special prosecutor and yet another grand jury for intimidation of jurors and other misconduct involving the first grand jury. I don't know what's happened since.