The Senate Majority leader, who’s getting pounced in the polls over his support for president Obama’s health-care plan and is now facing an uphill battle for re-election in his home state of Nevada, thought he was coming to friendly territory. He is, after all, a Democrat and a recent fundraiser in New York City was set up by Gary Cohn, president of Goldman Sachs (GS: 184.865, -0.097, -0.05%) and himself a long-time Democrat. But the reception Reid received from Goldman was anything but friendly. According to people with direct knowledge of the incident, during the event, which was held in...