I never said anything about opening mail.
Not me, the LEOs.
Quote #1: But, you did say that SOP requires a search of papers. What happens if you confront a sealed, stamped, addressed envelope? What if, in this no-ID harassment scenario, you x-rayed the envelope as described above and saw the shadow of a plastic credit card-size object?
Quote #2: Where this "don't blame me" argument falls apart is that the cop bases reasonable suspicion (if the thought process gets that far) on a TSA practice that the Supreme Court has already ruled to be valid -- flying without an ID. A cop wouldn't have the authority to run me -- or you -- against any criminal data base without reasonable suspicion or as a result of a traffic stop. They can't even get away with this at DUI roadblocks without some level of reasonable suspicion.