Thousands of Unpaid Teens Bag Groceries for Wal-Mart

Wal-Mart prides itself on cutting costs at home and abroad, and its Mexican operations are no exception. That approach has helped the Arkansas-based retail giant set a track record of spectacular success in the 16 years since it entered Mexico as a partner of the country's then-leading retail-store chain. But some of the company's practices have aroused concern among some officials and nongovernmental organizations (NGOs) that Wal-Mart is taking advantage of local customs to pinch pennies at a time when its Mexican operations have never been more profitable.