They're not. The trump prosecutor, (is in question by the judges now) who presented her cases to the grand jury ALONE with no judge or lawyer from the other side, is being reviewed right now to make certain she followed the law and presented truthful and full evidence in order to get them to indict, on both Comey and James....Some grand juries are in cahoots or are ignorant.
The prosecutors prior to her Trump appointment, could NOT get a grand jury, to indict....
SHE was required to show them any exculpatory evidence as well, that she likely didn't do....is the issue that will be reviewed by the judge.