As Marco Rubio rises in the polls, his financial past is coming back to haunt him - namely two years of credit card transactions from his time as speaker of the Florida House, the details of which remain a mystery. During the GOP presidential hopeful's 2010 Senate race, the Tampa Bay Times and the Miami Herald obtained his 2006 and 2007 credit card statements, which allegedly showed that he regularly charged personal expenses - including a four-day, $10,000 family reunion and repairs to his family minivan, according to the Times. The investigation also found he failed to disclose $34,000 in...