Palfrey is being prosecuted for a crime under federal law. If she says, "I have asked God for forgiveness," should the prosecution cease?
As a Senator, Vitter has either voted for, or at least not voted to repeal, the federal law that Palfrey is being prosecuted for breaking. He has admitted to, at a minimum, aiding and abetting her crime. Should he be treated better than she is?
Good points. In general, it's not helpful to a lawmaker's career to get himself in a position of having to deal with those kinds of questions.
However, since Louisiana politics is so polite and gentlemanly, perhaps no one will mention it if he decides to run again...