"In arguing that this Court should invalidate each of the provisions at issue, petitioners insist that we reaffirm our decision in Roe v. Wade, supra, in which we held unconstitutional a Texas statute making it a crime to procure an abortion except to save the life of the mother. We agree with the Court of Appeals that our decision in Roe is not directly implicated by the Pennsylvania statute, which does not prohibit, but simply regulates, abortion. But, as the Court of Appeals found, the state of our post-Roe decisional law dealing with the regulation of abortion is confusing and uncertain, indicating that a reexamination of that line of cases is in order. Unfortunately for those who must apply this Court's decisions, the reexamination undertaken today leaves the Court no less divided than beforehand. Although they reject the trimester framework that formed the underpinning of Roe, Justices O'CONNOR, KENNEDY, and SOUTER adopt a revised undue burden standard to analyze the challenged regulations. We conclude, however, that such an outcome is an unjustified constitutional compromise, one which leaves the Court in a position to closely scrutinize all types of abortion regulations despite the fact that it lacks the power to do so under the Constitution. In Roe, the Court opined that the State "does have an important and legitimate interest in preserving and protecting the health of the pregnant woman, . . . and that it has still another important and legitimate interest in protecting the potentiality of human life." 410 U.S., at 162, 93 S.Ct., at 731 (emphasis omitted). In the companion case of Doe v. Bolton, 410 U.S. 179, 93 S.Ct. 739, 35 L.Ed.2d 201 (1973), the Court referred to its conclusion in Roe "that a pregnant woman does not have an absolute constitutional right to an abortion on her demand." 410 U.S., at 189, 93 S.Ct., at 746. But while the language and holdings of these cases appeared to leave States free to regulate abortion procedures in a variety of ways, later decisions based on them have found considerably less latitude for such regulations than might have been expected. For example, after Roe, many States have sought to protect their young citizens by requiring that a minor seeking an abortion involve her parents in the decision. Some States have simply required notification of the parents, while others have required a minor to obtain the consent of her parents. In a number of decisions, however, the Court has substantially limited the States in their ability to impose such requirements. With regard to parental notice requirements, we initially held that a State could require a minor to notify her parents before proceeding with an abortion. H. L. v. Matheson, 450 U.S. 398, 407-410, 101 S.Ct. 1164, 1170-1172, 67 L.Ed.2d 388 (1981). Recently, however, we indicated that a State's ability to impose a notice requirement actually depends on whether it requires notice of one or both parents. We concluded that although the Constitution might allow a State to demand that notice be given to one parent prior to an abortion, it may not require that similar notice be given to two parents, unless the State incorporates a judicial bypass procedure in that two-parent requirement. Hodgson v. Minnesota, supra."