I cut this from the end of my last post, as it seems like a separate issue I would like to get some feedback about.

We see the divorce mediator tomorrow regarding the parenting issues. H knows what I am proposing - the 6 month rule before they are exposed to OW, and has already told me he will argue against it. I know that the morality of the situation is not a consideration, its what might be harmful and what should be in the best interests of the kids. 1) he just moved out a week ago and this was sudden news to the kids 2) he is already living with his girlfriend and they don't know this 3)she is his affair partner both this time and 4 years ago 4)the kids were exposed to her first time around and probably remember her, daughter especially, who was with them together and was concerned enough to tell me, and she has been asking questions about daddy's "ex" Asian girlfriend - when did it happen? Is it over now? This was before the move in. 5) they have just moved in together, and their relationship needs time to prove it is stable before exposing the kids to it.

Those are my justifications - hope the mediator agrees and tells my H that this is the best plan of action. If H doesn't agree, we may have to take this point to court. I have no idea what my odds are, only know what seems realistic and fair to me under the circumstances.

Anyone have experience with this issue and the legality of if, getting it included in the final decree etc ?

I can understand what you want. I don't want my son around OW either. Haven't had a problem yet and don't hope to anytime soon. I don't think I can handle it.
Good luck!

I'd feel the same as you and fight too, but I'm afraid you have no a legal base to ask him not to bring his kids during his visitations to his home eventhough he lives with OW who contributed to destroying your family? So far kids are not harmed/abused/in danger in that place.
I assume it's his 'good will' to accept your request...

Try though...