You may disagree with the physical fact if you wish; as Galileo said, "E pur si muove"
You may wish to consider the amount of sulfites, and whether they are added or naturally ocurring, but the existence of sulfites in wine is universal. See, eg:
This has been verified to be by many wineries and wine experts, when I was trying to find a sulfite-free wine.
And I do not think you'll find any support for your belief that the US government requires the addition of sulfites. Not that I believe that governments, particularly my own, must be consistent, but it would be a record setting performance for the government to require the use of sulfites and then require the labelling to reveal that sulfites are in the wine