Every single person who worked in, or even touched in the course of their work, an ICE Concentration Camp, needs to serve at least 5 years in prison, and that's for the lowliest, lightest impact job. Those who were significantly involved should spend decades, or even their entire lives, in prison.
In the future, when some dipshit proposes Concentration Camps for their enemies, everyone around them needs to say "No fucking way am I getting involved in this. The last time ended really badly, we learned all about it in school."