Last month, in "Heather Has 3 Parents," I wrote about a Canadian law suit that clearly reveals the slippery slope on which we shall surely be set by legalized same-sex marriage. A court in London, Ontario has been asked to declare three people the legal parents of a single child (the biological mother and father, and the lesbian partner of the natural mother). Since conception, the sexual relationship appears to have been confined to the lesbian partners, both of whom live with the child. Yet the biological father, a close friend of the biological mother and her partner, frequently visits...