The US president threatened the measures if EU tariffs on US whiskey are not withdrawn.
Archived version: https://archive.is/newest/https://www.euractiv.com/section/agriculture-food/news/trump-threatens-200-tariff-on-eu-wines-and-spirits/
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Unfortunately the US is not signatory of the Treay of Versailles of which a part enforces the Champagne designation, so in the US it is legal to produce and sell Champagne despite not being made in France.
https://vinepair.com/wine-blog/loophole-california-champagne-legal/