New details have emerged in the massive bribery scandal behind Wal-Mart's expansion into Mexico, where the corporate giant now operates one in five of its stores. After exposing the bribery earlier this year, The New York Times has now visited dozens of Mexican towns and cities to document the payoffs the company used to get its way. We're joined by the Pulitzer Prize-winning New York Times reporter who broke the story, David Barstow. As a result of Barstow's reporting, the Justice Department is now considering whether Wal-Mart violated the Foreign Corrupt Practices Act, which makes it a crime for American corporations to bribe foreign officials.