J. Scott Applewhite / AP Photo
In this Dec. 10, 2010, file photo, President Barack Obama listens as former President Bill Clinton speaks in the briefing room of the White House in Washington. When Bill Clinton takes the convention stage to endorse Barack Obama later this week, it will be a landmark step on a path to reconciliation for two former rivals whose political fortunes are now inextricably tied. By embracing Clinton, Obama hopes to capture the former president's uncanny knack for political survival against tough odds. And it doesn’t hurt that the economy and the nation’s budget picture last truly soared under Clinton.