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For reaction to President Bush's speech on corporate practices, Gwen Ifill talks with Joseph Grundfest, former commissioner at the Securities and Exchange Commission; Carolyn Woo, dean of the Mendoza College of Business at the University of Notre Dame; and Damon…

In a move that may spell the end of a French media giant, Jean-Marie Messier, the architect who built the utility company Vivendi into a multimedia powerhouse, resigned as the head of the company Tuesday.