Can not ship wine to Massachusetts

My friend Sean wants to ship me a nice bottle of Le Cigare Volant 2002.

But he can't.

Why not?

Update:
A California winery responds:

Hi Steve,

While your legislature has passed the favorable laws, the regulating agencies in MA have yet to produce the necessary paperwork and forms for us to complete. Also, they have many tax/excise requirements which may eventually make shipping to MA prohibitively costly for us.

Hopefully these issues will be resolved, but we are not sure when that might happen.

Best,

Peter Manetta
Bonny Doon Vineyard

This is maddening!