My understanding is that he annulled marriage number one, not number two. His third wife is not Catholic. He is essentially living in a state of continual and public mortal sin.
I believe an anulled marriage is with church approval, his divorce is not mine to judge. I'm sure there are many good Catholics who were caught up in bad marriages, as there are so many divorced these days. Same goes for his non Catholic wife, there are lots a good marriages out there between those of different faiths, and plenty of bad marriages between good Catholics. Judging people when you don't know the circunstances of their life or situation is very un-Christian like, wouldn't you say?