You answered not a single question I posed Jeff. How come?
States can expand the rights of the fetus, up to and until such time as Sandra Day O'Connor tells us that it intrudes on the Constitutional rights of the mother to abort. States characterizing killing of the fetus as murder without the consent of the mother is legally inapposite to this issue, even if otherwise apposite up to a point. Maybe SCOTUS will tell us that since a fetus is not human, killing it cannot be characterized as murder (because murder is only applicable to one who cannot be legally aborted) as a Constitutional matter. But if so, it will require other legal tools than pernumbra rights of privacy. It will require SCOTUS to tell us what the Constitution dictates are the essential definitional elements of the crime of murder.