@revelette1,
Comey didn't accuse Hillary of "gross negligence" in her handling of large numbers highly classified documents and e mails. Gross negligence is the standard for criminal action, and he studiously avoided it, saying she was extremely careless or something like that.
The fact is that the leader of the FBI had no standing to make or express such a judgment on the potential prosecution of that or any crime. That instead is the sole responsibility of the Attorney General. She strangely remained silent after her "accidental" meeting a few days earlier with Bill Clinton (in a remote hangar at the Phoenix airport where her and Bill's private aircraft were, by chance, parked next to each other during "refueling stops" - neither aircraft needed refueling and Phoenix was far from their planned routes). It does appear that they discussed far more than "the grandchildren" as she indicated to a reporter at the scene.
The AG's recently issued summary is the legally prescribed action required under the legislation establishing Special Counsels. An enduring principle of our legal system is that the records of investigation of potential criminal conduct are not released in cases where the investigation determined that no criminal conduct occurred. As for the question of supposed obstruction nof justice, that is a determination for the Attorney General to make and not the Special Counsel. AG Barr made his finding on that matter quite clear.