Today's "One First" explains why Stephen Miller is wrong that ICE officers have "federal immunity" from prosecution for all actions they take in their official duties, and that anyone attempting to prosecute them is committing a felony. Supremacy Clause immunity is a thing, but it's *not* absolute:

186. When Can States Prosecute...
186. When Can States Prosecute Federal Officers?

Stephen Miller claims that ICE officers have "immunity" for anything they do while enforcing immigration law. Even as an argument about *state* criminal prosecutions, that claim is overstated at best.

One First
You mostly engage with the second part of Neagle, but what of the first? That what they're doing goes beyond anything any fed law could constitutionally authorize? Maybe some could be legit if they just did it better. But sometimes they're helping themselves to more power than they're entitled to.
(And I ask this question not just in reference to ICE officers but a lot of federal employees and officials.)