Federal BOP and abuse, one in the same.

They regularly do secret trials, with secret witnesses, secret administrative punishments, up to and including executions with little or no outside oversight.

I know of other cases where they simply reintroduced evidence previously proven false in court and then used it to take administrative action against people under a pretty broad interpretation of how sovereign immunity works.

If you really want to see some crazy stuff in the abuse spectrum, take a look at how they do pretrial reports, which can and do lead to years of pretrial incarceration of people based on evidence and reports which are kept entirely secret from the defendant. People can and are locked up in horrible pretrial conditions as an incentive to get them to plead guilty to just about anything, which in turn is used as the justification for brutal and abusive pretrial treatment as defacto punishment for allegations for which there was never even an opportunity to dispute in open court.