Originally Posted by
5khours
You may well be right. We'll just have to see. But at least I think we now agree that it was a CBP decision not to seek pre-clearance for U.S. cardholders and had nothing to do with the ABTC scheme itself.
I agree with you that CBP could have done "one-way" pre-clearance without violating USC and for some unknown reason(s) choose not to. The reasoning behind it could been good (or not so good); we just don't know.