The 25% Loophole: Why 'American' Wine Doesn't Always Mean 100% US-Grown

When you pick up a bottle of wine labeled "American," you might reasonably assume every grape inside was grown in the United States. But under federal law, that bottle can legally contain up to a quarter of imported wine.[1][2]

This little-known regulatory allowance recently became the center of a fierce legislative battle in California. Assembly Bill 1585 sought to close the blending loophole, requiring any wine labeled "American" and sold or bottled in the state to be 100% domestically grown.[3]

Despite passing the California Assembly with a unanimous 67-0 vote, the legislation was abruptly pulled from a Senate committee agenda in late June 2026. The halt followed intense pushback from major multinational beverage companies and the Wine Institute.[1][2]

While the bill is dead for the current legislative session, the debate has pulled back the curtain on the mechanics of the global bulk wine trade and the complex rules governing what actually goes on a wine label.

To understand the conflict, consumers need to understand the tiered system of wine labeling. The rules are dictated by the federal Alcohol and Tobacco Tax and Trade Bureau (TTB), with some states applying stricter local standards.

At the most specific level are American Viticultural Areas (AVAs), such as Napa Valley or Sonoma County. To carry an AVA name, 85% of the grapes must come from that specific region, ensuring a distinct local terroir.

State labels are even stricter in California. For a bottle to proudly declare itself "California" wine, state law mandates that 100% of the grapes must be grown within its borders.[3][4]

However, the broader "American" or "United States" appellation operates under a looser federal standard. Current regulations require only 75% of the wine to be derived from domestic grapes, leaving producers free to blend in up to 25% imported bulk wine without disclosing the foreign origin on the front label.[2]

This 25% allowance is heavily utilized by large-scale commercial wineries. By importing bulk wine from countries with lower production costs—often shipped across the ocean in massive flexitanks—producers can significantly reduce their overhead and maintain consistent flavor profiles across massive production runs.[2]

For the domestic farmers actually growing the grapes, this practice has become a flashpoint. The California Association of Winegrape Growers (CAWG) and Family Winemakers of California co-sponsored AB 1585, arguing that the current system is fundamentally misleading to consumers who believe they are supporting local agriculture.[4]

The growers' frustration is compounded by a severe economic crunch. Overall wine consumption has dipped to historic lows, leaving California farmers with a massive oversupply. In regions like Lodi and the Central Valley, some growers have been forced to rip out thousands of acres of vines because large buyers have shifted to cheaper imported bulk wine.[2]

Proponents of the bill argue that if multinational companies want to blend foreign wine to save money, they should simply label it as a global blend rather than co-opting the "American" brand to sell it.[1]

On the other side of the debate, the Wine Institute—representing some of the state's largest producers—argued that the 100% requirement would create unintended consequences. They maintain that California already has some of the most stringent and transparent labeling laws in the world.[2]

Opponents contend that restricting the "American" label would strip winemakers of the flexibility needed to manage vintage variations and keep entry-level wines affordable for everyday consumers.[2]

Furthermore, the Wine Institute argued that fighting over label percentages distracts from the industry's true existential threat: the global decline in wine drinking. They suggest the industry should unite to build overall consumer demand rather than fracturing over sourcing rules.

With AB 1585 shelved for now, the 75/25 rule remains the law of the land. But for consumers, the legislative fight serves as a masterclass in reading the fine print. The next time you browse the wine aisle, the specific geographic words on the label will tell you exactly how close to home those grapes were actually grown.