In the United States, wines labelled "port" may come from anywhere in the world, while the names "Oporto", "Porto", and "Vinho do Porto" have been recognized as foreign, non-generic names for port wines originating in Portugal.
在美国，标记为波特酒的葡萄酒可能来自于世界各地，，而"Dão"、"Oporto"、"Porto",和"Vinho do Porto" 则成为国外的、非通用名称，被用在来自葡萄牙的进口葡萄酒。