Marco Rubio's use of a Republican Party of Florida American Express card is only part of the story. Over the course of his rise in politics, the Tampa Bay Times and partner Miami Herald chronicled his background and controversies. The most detailed accounting of Rubio's AmEx charges is this report from February 2010 that showed how the card was used for groceries, repairs to the family minivan and at a music equipment store. "I was as diligent as possible to ensure the party did not pay for items that were unrelated to party business," Rubio said in a written statement...