He was not married to anyone else. His first wife is dead, thus he's free to marry anyone he wants, as long as his intended is free to marry in the Church as well.
We may not like it, but there it is. He is the one who will have to answer to God for his own actions.
Actually I was referring to his cohabitation while Terri was still alive. I should have made that clear. I know he's a widower now and that he is free legally to marry, I just have trouble with the idea of the church sanctifying this marriage because of the divorce by the bride and the adultery by the couple. Maybe I don't understand the repentance process in the Catholic Church and I do not mean this as a wholesale indictment of the Catholic Church. I just don't see this wedding as valid as one entered into by a couple who has followed the Church's teachings regarding morality and marriage.