(Sen. Tim Kaine is reportedly Bill Clinton's favorite for the VP slot. (Photo: US Department of Education/flickr/cc) Sounding another alarm for progressives wary of the Democratic establishment's support for Wall Street, the man said to be leading the pack of potential Hillary Clinton running mates—Virginia Sen. Tim Kaine—has just this week sent a clear message to big banks: He's in their corner. Kaine, who is reportedly Bill Clinton's favorite for the vice presidential slot, signed onto two letters on Monday pushing for financial deregulation—letters that show the Clinton camp "how Kaine could be an asset with banking interests on...