"I also accept what is implicit in the Court's analysis, namely, a reaffirmation of Roe's explanation of why the State's obligation to protect the life or health of the mother must take precedence over any duty to the unborn. The Court in Roe carefully considered, and rejected, the State's argument "that the fetus is a 'person' within the language and meaning of the Fourteenth Amendment." 410 U.S., at 156, 93 S.Ct., at 728. After analyzing the usage of "person" in the Constitution, the Court concluded that that word "has application only postnatally." Id., at 157, 93 S.Ct., at 729. Commenting on the contingent property interests of the unborn that are generally represented by guardians ad litem, the Court noted: "Perfection of the interests involved, again, has generally been contingent upon live birth. In short, the unborn have never been recognized in the law as persons in the whole sense." Id., at 162, 93 S.Ct., at 731. Accordingly, an abortion is not "the termination of life entitled to Fourteenth Amendment protection." Id., at 159, 93 S.Ct., at 730. From this holding, there was no dissent, see id., at 173, 93 S.Ct., at 737; indeed, no member of the Court has ever questioned this fundamental proposition. Thus, as a matter of federal constitutional law, a developing organism that is not yet a "person" does not have what is sometimes described as a "right to life."2 This has been and, by the Court's holding today, remains a fundamental premise of our constitutional law governing reproductive autonomy. My disagreement with the joint opinion begins with its understanding of the trimester framework established in Roe. Contrary to the suggestion of the joint opinion, ante, at ____, it is not a "contradiction" to recognize that the State may have a legitimate interest in potential human life and, at the same time, to conclude that that interest does not justify the regulation of abortion before viability (although other interests, such as maternal health, may). The fact that the State's interest is legitimate does not tell us when, if ever, that interest outweighs the pregnant woman's interest in personal liberty. It is appropriate, therefore, to consider more carefully the nature of the interests at stake."