Based on personal experience of receiving parcels* via UPS I wonder if just a thorough check of any manifest would throw up various HAZMAT, either wrongly labelled or the documentation not examined.
* solvent based paints, supposedly shipped by ground USPS were wrongly directed to UPS and came through without a hitch, not once, but several times. Other items, accepted by UPS just disappear from the system or are returned to the sender as undeliverable - unexistant (?!) address.
The point I'm making is that even if it is a proscribed item the fault probably lies in UPS practices.
BTW surely JB is this thread's spiritual home? A lot more conspiracy theorists hanging out over there
