ARLINGTON, VA, 2017-Aug-22 — /EPR Retail News/ — The National Grocers Association (NGA), the trade association representing the independent supermarket industry, today (August 21, 2017) announced Christopher Jones, former legislative director and counsel for U.S. Representative Rick Crawford (R-AR), a member of the House Agriculture Committee and Nutrition Subcommittee, is joining its government relations department as…