When Clinton comes clean about his marital infidelity and publically apologizes for it, then I will forgive him. He revealed and admitted that he had lied under oath. He was charged with perjury and impeached. I beleive that he should have been removed from office, but he wasn't, and that's a done issue.
If Vitter is guilty of committing a crime, then he should do his time. I am not part of the law-enforcement process that would determine whether or not he is guilty, so I will treat him as innocent until he is found guilty.
Clinton's marital infidelity is none of my business as long as it doesn't take place in the White House. As far as I am concerned, what happens in the White House is an issue of national security, and as an American citizen I demand that that security not be compromised, especially by the sexual wantonness of the President of the United States.
Satisfied?