Sen. John McCain, the presumptive GOP nominee for president, has been linked by documents and testimony to another alleged case of what critics are calling influence peddling, this time involving a minority broadcaster in Pittsburgh. The New York Times last week published a major, controversial expose that insinuated McCain had a romantic relationship with telecommunications lobbyist Vicki Iseman, whose clients had a large stake in decisions made by the Senate Commerce Committeee McCain headed. The report, however, was denied by McCain and widely discredited for lack of evidence. According to his own testimony, it wasn't until he decided to give...