The "line in the sand" exists precisely because the medical profession decided they were comfortable terminating viable pregnancies for whatever reason. They parsed a dilemma and . . . chose poorly. The populations of most American states disliked that state of affairs so they implemented democratic restrictions on that sort of behavior. So now abortionists must tackle a different dilemma: what to do in the very rare case of a pregnancy that will actually kill the mother and laws that involve extreme prohibitions. If you take them at their word and they are not cowards, then they will perform the abortion. That's how you parse an ethical dilemma.