In January 2006, Hunter Biden was a lobbyist for William Oldaker, who had served as a campaign counsel and treasurer to Joe Biden. Jim Biden, Joe’s younger brother, called his friend Anthony Lotito for a favor. Hunter needed a new job. Joe was getting ready to run for the Democratic presidential nomination, and his son’s work for a Washington lobbying firm would be a problem. At least that was what Lotito later alleged in court filings. Jim and Hunter denied that a call like that ever took place. One way or another, the three of them decided in early 2006...