You're glossing right over what's happening here. Customs is expecting FedEx to _enforce_ law. Not comply with it, enforce it. Preventing a package from crossin

You're glossing right over what's happening here. Customs is expecting FedEx to _enforce_ law. Not comply with it, enforce it. Preventing a package from crossing the border on a legality basis is not the responsibility of any private entity in the United States. We have official agencies who act in that capacity and have authority to do so. So, no, it is nothing like putting seatbelts in cars or not polluting rivers. Equivalent would be forcing car makers to ensure customers wear their seatbelts or companies keep rivers at a certain level of pollution (regardless of their complicity in its pollution).