Well....you still haven't convinced me that it will definitely be a problem...or that it is likely to be a problem.
I guess I can't say that I spend a lot of time talking to law enforcement.
The fact that it has never, ever been done before in the US seems to indicate something. (No one has been prosecuted as a user of 2ci, as far as I know.)
I have found people who posted that they order 2ci as users in the UK and got encounters with the law. But it was scheduled there, and they also said they weren't arrested in the long run. A warrant was executed though, so if they had other stuff around, they might have gotten into trouble.
(People have been arrested in the UK for dried san pedro too. Maybe in the US too....that I have a hunch that that would be much more risky.)
One last thing: Calling people naive because they disagree with you reminds me of a debate I saw recently. I think it's much more constructive and convincing to state you case, back it up as much as possible from documented, reputable sources, and allow the readers to decide who to call names. I do realize I said you were "strangely opinionated," which was probably not the best thing to do to keep the conversation constructive.