If Congress enacts a national abortion rights law, it is very likely that somebody on the right is going to challenge it on the grounds that it violates the right to life of a fertilized egg.(the position taken by the life begins at conception crowd). As matters stand now, women have no U.S. Constitutional right to choose abortion, so a Court that accepts that life begins at conception would be bound to strike down a federal law giving women the power to choose abortion. 7/