Bruce, I was responding to Ake's question: "What have laws to do with faith in god as the giver of life?" My intent was to say that the issue of access to abortion, in the US, is a legal one rather than a religious one. Certainly, anyone or any group who wishes to change the law, through the established legislative process, has every right to do so.
Please excuse me for not responding to your question asking me if I would accept the statement that "an individual whose "faith in god as the giver of life" brings him or her to believe that slavery is contrary to that faith has every right, under the law, to choose not to have one. He or she has no right, under the law, to deny anyone else that access." This makes no grammatical sense whatever, and I do not understand what it is intended to mean.