[Portlande]

I work for an importer that provides them their wine and am semi-familiar with their distribution setup. Many online retails tackle the issue in different ways but wine.com has setup "stores" in a number of states which they ship the wine to and then those "stores" then ship to the customers. So on paper the customer is buying within the state basically even though all they did was buy online.. Also one thing to note is wineries can ship to more states than retailers can, so wine.com setup a winery licences in texas specifically so they can ship to more states under that licence.

Other online retailers (Californian) put in their shipping terms that the customer agrees to be buying the wine in califonia (even though they're shipping out of state).