A 1973 landmark decision by the United States Supreme Court on the issue of abortion, in which it ruled that a right to privacy under the due process clause of the 14th Amendment extended to a woman's decision to have an abortion, but that that right must be balanced against the state's two legitimate interests in regulating abortions: protecting prenatal life and protecting women's health. Arguing that these state interests became stronger over the course of a pregnancy, the Court resolved this balancing test by tying state regulation of abortion to the trimester of pregnancy.