On Wednesday, the Supreme Court heard oral arguments in Dobbs v. Jackson Women’s Health, a landmark case centered on a 2018 Mississippi law that bans most abortions after 15 weeks of pregnancy. The legal battle is the most consequential test of abortion rights in decades, and the outcome will have direct implications on the fate of the court’s 1973 Roe v. Wade decision, which legalized abortion, and its 1992 ruling in Planned Parenthood v. Casey that reaffirmed and amended Roe.