I am adding a part of Rav Tendler zatsals interview that might add some insight because it started off referring to a specific case. It is worthwhile to read it entirely.
The first question was:
Jewish Review: Rabbi Tendler, the recent Long Island court case where a husband sought to terminate the pregnancy of his comatose wife on the theory that such action might help the wife recover created a huge stir in the media. Could you comment, from the point of view of Jewish law, on this case and the court’s eventual decision to allow the termination of the pregnancy?
After a few questions and answers Rabbi Tendler says the following.
Rabbi Tendler: It is important to point out that the thrust to defend the Klein fetus came from the Pro-lifers,who are largely Catholic, and who follow the edict of their Pope, who has been resting his prestige on his ability to prevail on the abortion issue. We must realize that, in the Catholic Church, fetal life takes precedence over maternal life, because in their view, a fetus, unlike the mother, is yet without sin. This is a fundamental difference with the Jewish point of view on abortion.
Jewish Review: And I suppose this is why we don’t see Jewish groups joining the right to life movement.?
Rabbi Tendler: Correct,and this is why a person such as I, who is as opposed to abortion as anyone, will not partake in a joint statement with such groups, for they are actually prepared to commit murder according to our halakha. To sacrifice the woman in order to save the fetus is an act of murder according to Jewish law.
I agree that it is possible that Rav Tendler might have made a tzu shtel based on his understanding of Rav Moshe Zatsal’s views of laws that affect religion, but not heard directly from him, his opinion regarding the US making laws regarding abortion.