WASHINGTON, Sept. 20 -- The Mississippi Petroleum Marketers & Convenience Stores Association (MPMCSA) has submitted a public comment letter to the U.S. Department of Health and Human Services Food and Drug Administration (FDA) in response to the proposed "Tobacco Product Standard for Nicotine Yield of Cigarettes and Certain Other Combusted Tobacco Products." The organization, which advocates for businesses across multiple states involved in the manufacture, sale, and distribution of consumer goo more ST