Yeah, not a word about "people who receive such mail will be billed additional fees". It mentions that the sender in China will be charged more over time.
From all the people I have talked to about this especially makers who order alot from China, it was my understanding that this is what the post office will do. It is probably also the only thing they can do and they already have a system in place to collect such fees.
Interesting, got a source for that?