This position is important, as it stands apart from what has become the norm in most Western and industrialized countries of permitting adoption by same-sex couples.
In the United States, before 1973, states commonly barred same-sex adoption. With the rise to prominence of gay rights groups and the 1973 decision by the American Psychiatric Association (APA) to remove homosexuality from the list of mental disorders (please also see here), states have decided or have been compelled to permit same-sex adoption.
Proponents of same-sex adoption argue that the practice poses no risk to children. Well, aside for the example of gross immorality set by parents who live as a "gay couple," the facts say otherwise. Some headlines of note: