Walter Block, Rothbardian writer and professor of economics at Loyola University New Orleans, provides an alternative to the standard choice between "pro-life" and "pro-choice" which he terms "evictionism". According to this moral theory, the act of abortion must be conceptually separated into the acts of (a) eviction of the fetus from the womb; and (b) killing the fetus. Building on the libertarian stand against trespass and murder, Block supports a right to the first act, but except in certain circumstances not the second act. He believes the woman may legally abort if (a) the fetus is not viable outside the womb, and (b) the woman has publicly announced her abandonment of the right to custody of the fetus.