United States Postal Service clerks sort mail at the USPS Lincoln Park carriers annex in Chicago
United States Postal Service (USPS) Letter Carrier Lakesha Dortch-Hardy sorts mail at the Lincoln Park carriers annex in Chicago, November 29, 2012. The USPS, which relies on the sale of stamps and other products rather than taxpayer dollars, has been grappling for years with high costs and tumbling mail volumes as consumers communicate more online. REUTERS/John Gress (UNITED STATES - Tags: SOCIETY BUSINESS EMPLOYMENT)