You’ve probably noticed that wherever you go in this country, it’s pretty easy to find a post office. After all, the U.S. Postal Service has the largest retail network in the country, using its more than 31,000 locations to provide vital services like mailing and shipping, passport processing, and money orders to the American public. But did you ever wonder if post offices produce enough revenue to cover their operating costs? A new OIG white paper, Revenue and Costs in the Retail Network, look