RM
?
This is done routinely and isn’t even controversial neither legally nor lehavdil, halachicly .
Unlike abortion where there is some machlokes. This is more black and white. As far as I’m aware NO halachic authority requires ressucitation in the case of “severe deformities…, a fetus that’s nonviable” Eg anencephaly rch”l . Some poskim DO allow abortion (even though medically there is no “risk to mother”) but NO posek, (that I’m aware of ) that requires resuscitation in such a case