Is it possible that maybe he found Christ through the Catholic church and his old church wasn’t working for him? Perhaps his past transgreesions are in the past and he is not the same man as Newt the audulterer? You can see the light and find God other than through an evangelical conversion. In fact, as a Catholic by blood myself, I have found those who entered the Church through conversion generally are much more religious than those like myself who were brought up in it. The process of becoming a Catholic is not easy either.
Afterall, he hasn’t had a personal scandal in what, 18 years?