In one case, an insurer prevented a woman from getting a CT scan her doctor ordered. In another, a mother couldn’t afford the full regimen of special bags needed to clear her cancer-stricken daughter’s lungs. In a third case, a woman lost her health insurance and could not afford end-of-life chemotherapy.

These examples come from National Nurses United, the country’s largest nurses’ union. To prevent further incidents like these, the union favors a universal, government-run health care system. A lead editorial in the New York Times last week appeared to endorse their thinking.