Talks about Napa's truth-in-labeling law - which requires that all Napa wine be made with at least 75% Napa grapes - are taking center stage after Raymond Vineyards and Reata Winery proposed to expand production this year. The question at stake is what happens if Napa wine production surpasses the availability of Napa County grapes? So the Napa County Planning Commission must determine if the proposed expansions are up to snuff, reports the Napa Valley Register.