The Supreme Court on Monday agreed to take up a major abortion case next term concerning a controversial Mississippi law that banned most abortions after 15 weeks, rekindling a potentially major challenge to Roe v. Wade at the majority conservative court.The Supreme Court on Monday agreed to take up a major abortion case next term concerning a controversial Mississippi law that banned most abortions after 15 weeks, rekindling a potentially major challenge to Roe v. Wade at the majority conservative court.