This. In the episode, they say Rios is being sent to a Sanctuary District along the border, and maybe by 2024 that's what they'll be called, but right now they're immigration camps, or concentration camps if one such as myself prefers, and they are Sanctuary Districts in every way except the 1990s direct allegory of concrete walls.
It would seem my assumption that ICE is a fictional dystopian extra added to Homeland Security is incorrect, having just googled and seeing it's a thing.
I was wondering why the dialogue reference to Sanctuary Districts bugged me so much this week, and I just realized the reason is that it causes this story to feel more "fictional." Tragically, we have real things today that are as bad and worse than the Sanctuary Districts. Just call them what they really are. Making this actual point is more important than attending to continuity porn nuances.
Last week, I thought putting the Sanctuary District signs in homeless encampments was clever, as I thought it was making the point that our real conditions today are the same as what was dreamed up as a grim, brutal dystopia in the 90's. We did it all in real life, we just didn't give them that name. I thought it was lacerating & truthful commentary, not an attempt to reconcile this into "Past Tense."