Biden's career provides grist for McCain's mill By PETE YOST and HOLBROOK MOHR – Aug 23, 2008 WASHINGTON (AP) — In August 2007, three men who later became entangled in a Mississippi bribery scheme raised money for Sen. Joe Biden's run for president. A month later, two of the three were overheard in a phone call recorded by the FBI discussing federal legislation and a prospective meeting with Biden's brother, Jim. It's unclear whether any meeting ever occurred or whether legislation was ever discussed, so the episode may mean little — except as an example of the potential political vulnerabilities...