DUBUQUE, IA - DECEMBER 9: Democratic Presidential hopeful Sen. Joe Biden (D-DE) fields questions as his son Hunter Biden (R) looks on at a campaign stop at 180 Main Pub and Restaurant December 9, 2007 in Dubuque, Iowa. The stop was part a of four-day campaign swing through central and eastern Iowa that is scheduled to end Monday. (Photo by Scott Olson/Getty Images)
