how do domestic shipments get caught? I would think if the government is ALREADY keen to the source then maybe they would go after you but would'nt that tip off the source who is the bigger fish? Unless they have already caught him and are using his computer to set up or track ongoing deals...(entrapment isn't it)
does the usps xray or bring in drug sniffing dogs randomly? I presume if your pack leaks then you might be in deep $hit. I can't really think of any other reasons....
Any insight?