In the EU, it is legal to mix different olive oils. Similarly, I think may be legal to mix honeys from different places of origin. So use n% american honey, (100-n)% non-american honey and supermarkets might still sell it under a brand name which has "American" in its name, e.g. "Sunlit Meadows True American Wildflower Honey" and in the fine print it might say "Contains a blend of American and Non-American Honeys". To make it untraceable and hide the weight fractions of the ingredients, ultra filtering helps such that n = 0.05 (= 5%).