evidence: Why it matters: Dr. Jill Biden; his younger sister, Valerie Biden; and 85-year-old Ted Kaufman, the president's longtime friend and constant adviser — plus a small band of White House advisers — are the only Biden deciders. [...] "I never thought this was a nifty idea," Carville said of Biden's run. He said there are few people the president really listens to: "He doesn't have advisers. He has employees."