State restrictions on abortion compel women to continue pregnancies they otherwise might terminate. By restricting the right to terminate pregnancies, the State conscripts women's bodies into its service, forcing women to continue their pregnancies, suffer the pains of childbirth, and in most instances, provide years of maternal care. The State does not compensate women for their services; instead, it assumes that they owe this duty as a matter of course.

Justice Blackmun in Planned Parenthood v. Casey, 505 U.S. 833, 928 (1992) (concurring in part, concurring in the judgment and dissenting in part)