"Unlike the plurality, I do not understand these viability testing requirements to conflict with any of the Court's past decisions concerning state regulation of abortion. Therefore, there is no necessity to accept the State's invitation to reexamine the constitutional validity of Roe v. Wade, 410 U. S. 113 (1973). Where there is no need to decide a constitutional question, it is a venerable principle of this Court's adjudicatory processes not to do so, for "[t]he Court will not 'anticipate a question of constitutional law in advance of the necessity of deciding it.'" Ashwander v. TVA, 297 U. S. 288, 297 U. S. 346 (1936) (Brandeis, J., concurring), quoting Liverpool, New York and Philadelphia S. S. Co. v. Commissioners of Emigration, 113 U. S. 33, 113 U. S. 39 (1885). Neither will it generally "formulate a rule of constitutional law broader than is required by the precise facts to which it is to be applied." 297 U.S. at 297 U. S. 347. Quite simply, "[i]t is not the habit of the court to decide questions of a constitutional nature unless absolutely necessary to a decision of the case." Burton v. United States, 196 U. S. 283, 196 U. S. 295 (1905). The Court today has accepted the State's every interpretation of its abortion statute, and has upheld, under our existing precedents, every provision of that statute which is properly before us. Precisely for this reason, reconsideration of Roe falls not into any "good-cause exception" to this "fundamental rule of judicial restraint. . . ." Three Affiliated Tribes of Fort Berthold Reservation v. Wold Engineering, P. C., 467 U. S. 138, 467 U. S. 157 (1984). See post at 492 U. S. 532-533 (SCALIA, J., concurring in part and concurring in judgment). When the constitutional invalidity of a State's abortion statute actually turns on the constitutional validity of Roe v. Wade, there will be time enough to reexamine Roe. And to do so carefully."