Recent press about the death of Savita Halappanavar, admitted to a hospital in Ireland with medical complications in a 17-week pregnancy, is a grim reminder about the impact of abortion restrictions on women’s lives.

In Ireland, abortion is legal only to save a woman’s life. In the last two years in the United States, nine states have passed laws banning abortion after 20 weeks (in Arizona abortion is banned after 18 weeks) except to save a woman’s life. But as the death of Ms. Halappanavar so poignantly illustrates, “risk to a woman’s life” in emergency situations is extremely difficult to assess.