When you run an attack ad against your opponent for refusing to compete in a debate, you can’t very well bow out of one yourself. So today, Senator Hillary Rodham Clinton’s campaign said that she would participate in a debate sponsored by MSNBC in Cleveland, Ohio. Howard Wolfson, a spokesman for Mrs. Clinton...expressed its concerns...on a comment by an anchor, David Schuster, who said that the campaign had “pimped out” Chelsea Clinton to make calls to superdelegates on her mother’s behalf. Despite Mr. Shuster’s on-air apology and temporary suspension, the campaign threatened to boycott the network’s debates, citing “the pattern...