"In Roe and Doe, we specifically reserved decision on the question whether a requirement for consent by the father of the fetus, by the spouse, or by the parents, or a parent, of an unmarried minor, may be constitutionally imposed. 410 U.S. at 410 U. S. 165 n. 67. We now hold that the State may not constitutionally require the consent of the spouse, as is specified under § 3(3) of the Missouri Act, as a condition for abortion during the first 12 weeks of pregnancy. We thus agree with the dissenting judge in the present case, and with the courts whose decisions are cited above, that the State cannot "delegate to a spouse a veto power which the state itself is absolutely and totally prohibited from exercising during the first trimester of pregnancy.""