South Carolina’s ban on abortions after roughly six weeks is back in court and centered on the definition of fetal heartbeat.

Lawyers for the state’s Planned Parenthood clinics argued May 2 the state's abortion law should be interpreted as taking effect at nine weeks of pregnancy rather than six.

The new ban has an exception for saving a woman's life, as well as in cases involving rape and incest. But Roberts said health care workers are still prevented from performing an abortion on a nonviable pregnancy that they know may become deadly -- such as when the fetus is missing organs or implanted outside the uterus -- until it actually becomes deadly.