The primary federal laws that govern how EPA regulates pesticides in the United States are FIFRA and the Federal Food, Drug, and Cosmetic Act (FFDCA). Under FIFRA implementing regulations, EPA is to review applications for pesticide products and register those that it determines will meet the FIFRA statutory standards for registration. If the use of a pesticide would result in a residue of the substance in or on food or animal feed, EPA may not register a pesticide under FIFRA unless it can determine that the residue is "safe" as defined by FFDCA.