All of the people who ever worked there deserve judicial punishment AND a court mandated ban to ever work with vulnerable people.

AND: Everyone who’s job it was to make sure these facilities were up to standards and are adequately controlled needs to be helped responsible. That does intentionally not only mean the actual people doing the on-scene-audits, but also the people responsible for them. You can have the most upright and non corruptible people doing these audits - if they only have enough financing to have two for 2000 facilities they are useless.

Which a lot of people don’t know: IOM also helps migration within industrialized nations - e.g. they used to have special flight conditions for migration to and from the US or Australia. (Mostly not cheaper but extra luggage allowance or things like that)