"Same-sex marriage also raises problems regarding reproductive technologies. Society must limit the use of these technologies to protect children. But such limitations could be prohibited if they contravened same-sex couples' rights to found family, rights that come with marriage as a matter of law. I believe a child has a right not to be created from the sperm of two men or the ova of two women, or by cloning. Including same-sex relationships in marriage would support such uses of reproductive technologies. "Read the whole thing.
Canada's Dr. Margeret Somerville, a McGill Law and Ethics professor, affirms that SSM would grant SSP rights: