I concede that [3] is not the best case of this reading more into it. My point still stands though.
If visitors are one immigration mistake away from weeks in a detention camp, or any other unjust punishment it's reasonable that visitors would not want to visit.
A quick search suggests 25k Canadians enter the US daily for multi-day trips. If ICE was any real concern here for Canadians we'd hear a lot more about it I think.
