Is it really possible in every situation for government to be morally neutral, even religiously neutral? No.
From Anthony Esolen (clip):
On the impossibility: consider the effects of a permission that radically alters the nature of the context in which the action is permitted. We might call this the Nude Beach Principle. Suppose that Surftown has one beautiful beach, where young and old, boys and girls, single people and whole families, have been used to relax, go swimming, and have picnics. Now suppose that a small group of nudists petitions the town council to allow for nude bathing. Their argument is simple—actually, it is no more than a fig leaf for the mere expression of desire. They say, “We want to do this, and we, tolerant as we are, do not wish to impose our standards on anyone else. No one will be required to bathe in the raw. Live and let live, that’s our motto.”
But you cannot have a Half-Nude Beach. A beach on which some people stroll without a stitch of clothing is a nude beach, period. A councilman cannot say, “I remain entirely neutral on whether clothing should be required on a beach,” because that is equivalent to saying that it is not opprobrious or not despicable to walk naked in front of other people, including children.
Two factors must be at work, for the Nude Beach Principle to apply. One is whether we can expect some people to act upon the permission. The other is an easily predictable harm that the permission so acted upon will bring to people who do not act upon it, or who, because of moral disapprobation, disgust, fear, or pain, would never act upon it. In Surftown, it means that ordinary people will have lost their beach. They will have lost it to theintolerance of the nude bathers, who, even if they were correct about the moral permissibility of their parading their wares, will not forbear with their more scrupulous neighbors. In this matter, to pretend not to choose is to choose.