The American Postal Workers Unions Bridgeport local is writing to a representative regarding HR-2353, which aims to prohibit the use of 9-digit zip codes. The union argues that the funds should be used for productivity and better service to the public, rather than investing in expensive machinery for the 9-digit zip code system. They also highlight the importance of improving safety conditions and creating a better working climate in postal facilities to increase productivity. The union mentions a study conducted by a Fairfield University Professor, which suggests that memory retention decreases after 7 digits. They request support for the necessary bill to control postal revenues.