It was also signed by Marc. It would be perfectly fine for him and his wife to have a difference of opinion, but if Laura holds a view that Marc holds to be act

It was also signed by Marc. It would be perfectly fine for him and his wife to have a difference of opinion, but if Laura holds a view that Marc holds to be actively harmful, as he has argued in the past, it's still hypocritical for him to endorse that view. Though I think it's more likely that Marc is just the more typical "Yes In Your Backyard" kind of hypocrite.