According to some pending legislation in Arizona:
On page eight of the proposed amendment to H.B. 2036, lawmakers lay out the “gestational age” of the child to be“calculated from the first day of the last menstrual period of the pregnant woman,” and from there, outlaws abortion “if the probable gestational age of [the] unborn child has been determined to be at least twenty weeks.”
The architects of the amendment say that prohibiting abortion after 20 weeks — except in cases of medical emergency — is necessary for the safety of both mother and child. By designating a life to begin weeks before even possible, however, some critics are condemning Arizona lawmakers for looking for a way to involve itself in abortion matters before it can even become an issue.