The Human Life Amendment is the name of multiple proposals to amend the United States Constitution that would have the effect of overturning the Supreme Court 1973 decision Roe v. Wade, which ruled that prohibitions against abortion were unconstitutional. All of these amendment proposals seek to overturn Roe v. Wade, but most of them go further by forbidding both Congress and the states from legalizing abortion. Some of the proposals define human life as beginning with conception or fertilization.