The Supreme Court just agreed to hear an abortion case on a bill unlike many others.

While states regularly enact restrictions on abortion such as 20-week bans and requirements that minors obtain parental consent to have an abortion, the courts haven’t allowed a ban before 20 weeks. Courts frequently strike down heartbeat bills that ban abortion at about six weeks gestation. However, Dobbs v. Jackson Women’s Health is about a 15-week abortion ban proposed in Mississippi that a federal court previously struck down.