structuring their supply chains

1. Should companies such as Nike, Liz Claiborne, and Target avoid structuring their supply chains so that they include polluters, even if the pollution is occurring somewhere far from the United States?
2. What are the pros and cons associated with using supplies and/or labor sourced from supply chain partners (direct and indirect) based in countries that do not have strict pollution standards?
3. Does the AMA Statement of Ethics address the issue of environmental protection in supply chain management?