"Casey justified both the abortion right and its regulation in terms that reflected the views of mobilized proponents and opponents of abortion rights more clearly than Roe itself had in 1973. Like Roe, Casey held that women had a constitutionally protected right to decide whether to bring a pregnancy to term, but, unlike Roe, Casey allowed government to regulate the exercise of that right from the beginning of pregnancy in the interests of protecting potential life—so long as the regulation did not impose an “undue burden” on a woman’s decision. Even as Casey narrowed the right recognized in Roe, it justified that right more expansively than Roe did. Casey tied constitutional protection for women’s abortion decisions to the fundamental liberty to choose one’s family life, as well as to the understanding—forged in the Court’s sex-discrimination cases—that government cannot use law to enforce traditional sex roles: “Her suffering is too intimate and personal for the State to insist, without more, upon its own vision of the woman’s role, however dominant that vision has been in the course of our history and our culture. The destiny of the woman must be shaped to a large extent on her own conception of her spiritual imperatives and her place in society.” Casey’s account of the constitutional values that the abortion right vindicates makes clear that government respects not only women’s freedom but also their equal citizenship. Yet, Casey also listens carefully to Roe’s critics. It allows government to regulate women’s abortion decisions to express respect for the value of human life, so long as government does so in ways that express respect for the decisional autonomy of women: “[T]he State may enact rules and regulations designed to encourage her to know that there are philosophic and social arguments of great weight that can be brought to bear in favor of continuing the pregnancy to full term and that there are procedures and institutions to allow adoption of unwanted children as well as a certain degree of state assistance if the mother chooses to raise the child herself.” In ways that Roe did not, Casey situates the abortion right in a community deeply divided over the basic values implicated by the debate. That conflict continues—on and off the Court."