"Both the right and regulatory interest that Roe recognized emerged from more than a decade of searching public conversation about abortion. Reasoning about the meaning of constitutional precedent in the midst of that conversation, the justices concluded that the right to privacy recognized in Griswold covered not only contraception but abortion as well. The Court conducted a lengthy analysis of historical precedent before declaring that the Constitution protected the abortion decision from state interference until the point of fetal viability. But, in explaining its decision, the Court also invoked or adverted to the judgments of growing numbers of lower courts, the decisions of public authorities such as the Rockefeller Commission that endorsed the legalization of abortion, and measures of popular support for liberalizing access. (In addition to the many briefs in Roe, Justice Blackmun had in his files the papers in Abele v. Markle, Connecticut’s abortion case, and other lower court decisions; documents reflecting the views of organizations such as the American Medical Association and the American Bar Association; and the 1972 Gallup poll reports showing steadily rising support for decriminalization.)"