Abortion first started being banned in the US in the 1800s not out of any moral or religious standpoint, but because abortions were largely the province of (female) midwives, and (male) doctors were trying to consolidate all medicine under their own power and authority.

Early feminists like Susan B. Anthony were /for/ abortion bans, but ONLY because they were more dangerous to the woman than childbirth and so should not be compelled unless necessary.

Modern abortions do no physical harm to the woman and so Anthony et al's objections have fallen by the wayside.