"In Maher v. Roe, 432 U.S. 464, 473-474, 97 S.Ct. 2376, 2382, 53 L.Ed.2d 484 (1977), the Court explained: "Roe did not declare an unqualified 'constitutional right to an abortion,' as the District Court seemed to think. Rather, the right protects the woman from unduly burdensome interference with her freedom to decide whether to terminate her pregnancy." See also Doe v. Bolton, 410 U.S. 179, 198, 93 S.Ct. 739, 750, 35 L.Ed.2d 201 (1973) ("[T]he interposition of the hospital abortion committee is unduly restrictive of the patient's rights"); Bellotti I, supra, 428 U.S., at 147, 96 S.Ct., at 2866 (State may not "impose undue burdens upon a minor capable of giving an informed consent"); Harris v. McRae, 448 U.S. 297, 314, 100 S.Ct. 2671, 2686, 65 L.Ed.2d 784 (1980) (citing Maher, supra ). Cf. Carey v. Population Services International, 431 U.S., at 688, 97 S.Ct., at 2018 ("[T]he same test must be applied to state regulations that burden an individual's right to decide to prevent conception or terminate pregnancy by substantially limiting access to the means of effectuating that decision as is applied to state statutes that prohibit the decision entirely"). These considerations of the nature of the abortion right illustrate that it is an overstatement to describe it as a right to decide whether to have an abortion "without interference from the State," Planned Parenthood of Central Mo. v. Danforth, 428 U.S. 52, 61, 96 S.Ct. 2831, 2837, 49 L.Ed.2d 788 (1976). All abortion regulations interfere to some degree with a woman's ability to decide whether to terminate her pregnancy. It is, as a consequence, not surprising that despite the protestations contained in the original Roe opinion to the effect that the Court was not recognizing an absolute right, 410 U.S., at 154-155, 93 S.Ct., at 727, the Court's experience applying the trimester framework has led to the striking down of some abortion regulations which in no real sense deprived women of the ultimate decision. Those decisions went too far because the right recognized by Roe is a right "to be free from unwarranted governmental intrusion into matters so fundamentally affecting a person as the decision whether to bear or beget a child." Eisenstadt v. Baird, 405 U.S., at 453, 92 S.Ct., at 1038. Not all governmental intrusion is of necessity unwarranted; and that brings us to the other basic flaw in the trimester framework: even in Roe's terms, in practice it undervalues the State's interest in the potential life within the woman. Roe v. Wade was express in its recognition of the State's "important and legitimate interest[s] in preserving and protecting the health of the pregnant woman [and] in protecting the potentiality of human life." 410 U.S., at 162, 93 S.Ct., at 731. The trimester framework, however, does not fulfill Roe's own promise that the State has an interest in protecting fetal life or potential life. Roe began the contradiction by using the trimester framework to forbid any regulation of abortion designed to advance that interest before viability. Id., at 163, 93 S.Ct., at 731. Before viability, Roe and subsequent cases treat all governmental attempts to influence a woman's decision on behalf of the potential life within her as unwarranted. This treatment is, in our judgment, incompatible with the recognition that there is a substantial state interest in potential life throughout pregnancy. Cf. Webster, 492 U.S., at 519, 109 S.Ct., at 3057 (opinion of REHNQUIST, C.J.); Akron I, supra, 462 U.S., at 461, 103 S.Ct., at 2509 (O'CONNOR, J., dissenting)."