No. None of those have anything to do with the principle of free speech.

Port wine has a legal definition in the US. You can't sell it as champagne or as cola.

However, it is true that ingredient, food and drink labels may have different definitions from those used in other countries, or from what you personally think they should be.

But they still have actual definitions that have to be followed. (Except for subjective, non-technical terms like "tasty", "artisanal", etc.)