Tourists pose for photos while visiting a vineyard in Yountville, in California's Napa Valley, on October 05, 2026. Napa Valley rose to international fame when its wines beat the French, turning this corner of California into a destination for oenophiles. But US President Donald Trump's unpredictable tariff policies and his seemingly endless attacks on traditional allies is souring the area's relationship with the foreign tourists and international markets it has grown to depend on. (Photo by Josh Edelson / AFP via Getty Images)