USPS will allow beer and wine shipments now, provided they originate from a licensed brewery or vintner and follow a bunch all the regulations (making sure it is signed for by someone 21+, etc.)
Are you sure? I couldn't find anything on USPS's website about it last night and while there were a bunch of news stories from 2013 about it being proposed, there were no more recent ones saying that was changed. Sure seems like those same news outlets that covered the proposal would cover the actual change.