A meat inspection program that the Agriculture Department plans to roll out in pork plants nationwide has repeatedly failed to stop the production of contaminated meat at American and foreign plants that have already adopted the approach, documents and interviews show. The program allows meat producers to increase the speed of processing lines by as much as 20 percent and cuts the number of USDA safety inspectors at each plant in half, replacing them with private inspectors EMPLOYED BY MEAT COMPANIES. The approach has been used for more than a decade by five American hog plants under a pilot program....