FDA regulates the labeling of food – both bulk labeling and consumer product labeling

Allergens, GMO, Gluten Free, Natural
Information can be found relating to allergen, gluten and other “free from claims”, information on “natural” and GMO labeling.

Code of Federal Regulations Title 21(CFR)
The 21 CFR 101.22 includes information on food labeling in the United States, including labeling of spices, flavorings, colorings and chemical preservatives.