In January, Robert F. McDonnell, 71st governor of Virginia, was sentenced to two years in prison followed by two years of supervised release after his conviction on 11 counts of public corruption. He, and especially his wife, behaved badly. But it's worth taking a closer look at what was considered criminal in McDonnell's case, because, at least so far, some in the press are suggesting that Hillary Clinton's conduct must meet a much higher threshold to be considered problematic.