No federal law was actually cited. I didn't expect it to be, because I'm sure I'm right about the issue. I wasn't talking about what Tim was talking about - I already know about what he mentioned.
Consider this case:
https://www.usatoday.com/story/news...wing-illegal-immigrant-escape-ice/3574450002/
Now, perhaps the case will eventually be ruled in favor of the judge here, but I tend to doubt it. And given that a
judge was charged with obstruction for doing relatively modest things to thwart an ICE operation to arrest one guy, it simply beggars belief that private citizens would not be breaking the law if they hinder ICE officers by, for example, tipping off undocumented people, using themselves as human shields to block ICE vehicles, lying to ICE officers about having seen anyone passing this way, etc. etc.
Also, I think you missed some context for the discussion provided by a PM exchange Mary and I had prior to the posts that were made yesterday. If you'd read that I think it would have been obvious to you that I was going for an argument to absurdity and that I am not arguing in bad faith at all here.