The National Association of Convenience Stores is a trade association representing the convenience and fuel retailing industry. Founded in 1961, NACS has thousands of member companies, primarily in the United States but also in about 50 other countries. NACS conducts market research, hosts conferences and trade shows, and conducts political and legal advocacy. NACS is particularly concerned with the regulation of motor fuels, high credit card swipe fees, and labor law. From Wikipedia