MR. JUSTICE BLACKMUN delivered the opinion of the Court. MR. JUSTICE REHNQUIST, dissenting. MR. JUSTICE STEWART, concurring. A pregnant single woman (Roe) brought a class action challenging the constitutionality of the Texas criminal abortion laws, which proscribe procuring or attempting an abortion except on medical advice for the purpose of saving the mother's life. A licensed physician (Hallford), who had two state abortion prosecutions pending against him, was permitted to intervene. A childless married couple (the Does), the wife not being pregnant, separately attacked the laws, basing alleged injury on the future possibilities of contraceptive failure, pregnancy, unpreparedness for parenthood,...