California Bill Would Tighten Rules for American Wine

California lawmakers are weighing a bill that would tighten the rules for wines labeled “American,” a move that could force producers to use only grapes grown in the United States if they want to keep that designation on bottles made or bottled in the state.

The proposal, Assembly Bill 1585, would close a loophole in current labeling rules that allows wines carrying the “American” appellation to include up to 25% imported bulk wine. Under the bill, any wine labeled “American” and produced or bottled in California would have to be made from 100% American-grown grapes.

The issue has drawn attention because California produces about 80% of the wine made in the United States, giving the state’s rules broad influence over the national market. Supporters of the bill say it would bring American labeling standards closer to those used in other major wine-producing countries, where origin claims are generally stricter. In France, for example, a wine labeled Vin de France must come entirely from French grapes. Similar rules apply across the European Union, as well as in Australia and New Zealand.

At present, U.S. law allows some flexibility that does not exist in those markets. A wine labeled “American Wine” can legally contain imported bulk wine as long as it stays within the 25% limit. Critics of that system say it creates an uneven playing field for domestic growers and makes the label less meaningful for consumers who assume “American” means fully domestic.

The debate comes at a difficult moment for California grape growers. Many are struggling to sell fruit, and some vineyards have been removed because demand has not kept pace with supply. Supporters of AB 1585 argue that requiring 100% American grapes in wines labeled “American” could help strengthen demand for domestic fruit and improve conditions for growers.

The bill also touches on a broader question in the wine business: how much consumers should be told about where their wine comes from. Advocates of tighter labeling rules say buyers deserve clearer information and many want to support domestic agriculture when they shop. They argue that more precise labels would build trust and improve transparency in an industry that depends heavily on origin and authenticity.

Opponents are likely to come from large producers that rely on current rules to blend imported bulk wine into wines sold under the American appellation. Those companies include some of the country’s biggest supermarket wine brands, which benefit from lower costs when they can use imported wine in blends. Industry observers say those savings can be significant, especially because existing trade policy can make imported bulk wine cheaper than domestic alternatives.

AB 1585 is still under consideration in Sacramento, and its fate remains uncertain. If approved, it would not change every American wine label, but it could reshape how one of the country’s most common appellations is used and how much of the nation’s wine supply depends on grapes grown at home.