The reason Mississippi's "personhood" initiative is getting attention is its implication for contraception. If personhood begins at fertilization, the initiative would de facto illegalize hormonal contraceptives. It is abortion advocates, not crazy anti-contraceptive people, making the noise. Abortion supporters are completely comfortable with hormonal contraceptives' failsafe mechanism of creating a uterine environment unfavorable for the implantation of a fertilized ovum.
Diane Derzis, who runs Mississippi's only abortion clinic, said most people don't understand how far-reaching the amendment could be. "By this very definition of this bill, a fertilized egg is a person, so that does away with the IUD and most forms of birth control," she said.
Pro-contraception Christians are the only people who have ever balked at accepting the potential for all forms of hormonal contraception to function as an abortifacient.
Disclaimer: Mea maxima culpa.