Ok, here's what the law says:
If you RECEIVE the snakes, KNOWING they were mailed to you in an improperly marked package, you ARE breaking the Lacey Act law. And the fines are very high if you are caught. It's not only the shipper who is cited, but also the receiver.
Your only recourse to avoid becoming an accomplice is to reject the package when it arrives. But of course, no compassionate person would do such a thing, because the animals would most likely die as a result of it.
This is how these bad shippers keep going on the way they are--they make their buyers into accomplices. Anyone who signs for and accepts such a package cannot make a complaint, because they themselves are in violation of the law.
This is obviously a very BIG problem with the Lacey Act, but at the moment, that is the way things are.
And I'm sorry, but no one who ships a snake through USPS is a good guy. Maybe they were once, but this behavior pretty much eliminates it. That's like saying 'oh, this guy deliberately sent me a dead snake once, but that was just one incident, he's always been a good guy to deal with'. REALLY???
But this is even worse. This is turning his customer into a criminal, as well as risking the lives of the animals the customer paid for. How is this the behavior of a GOOD guy?