It wasn’t just mistreatment it was political corruption condoned by Obama himself. He weaponized the Government against his political opponents, his handpicked czar cohorts in crime helped him do it. His Congressional approved Cabinet was a bunch of figure bobble heads while the Obama hand picked gang of (private citizen) thugs ruined the country and Valarie Jarrett oversaw and ran the criminal activity.
Concurrent with this operation was the Obama/Holder push for more gun control regulations and specifically targeting FFL’s in border states (red states) with punitive audits and UCO’s.
Obama was openly blaming US citizens and FFL’s for the Violence in Mexico when it was his administration providing them the guns illegally and without any coordination with the Mexican authorities.
I don’t remember anyone saying either of them were going to be indicted for anything but Sessions was a gutless Eunuch that wasn’t’ about to poke the hornets nest by investigating anything that went on with the last administration.
Barr’s appointment solved that problem and the investigations are ongoing.