Following the U.S. Supreme Court’s decision last week to overturn Roe v. Wade, the battle for abortion rights has now moved to state courts and legislatures around the country. Thirteen American states, mainly in the South and Midwest, had laws ready that would ban abortion once Roe v. Wade was overturned. Abortion is a medical operation that ends a pregnancy. The Guttmacher Institute is an organization that supports abortion rights. It says 26 American states are likely to ban abortion now that Roe has been overturned. Opponents of abortion rights are now seeking to ban abortion across all 50 states. Abortion-rights supporters are trying to block or delay such measures in state courts. Many cases center on so-called “trigger laws.” These are laws that ban abortion but only become enforceable after the overturn of Roe. Other legal actions target old anti-abortion state laws that were unenforced under Roe, known as “zombie laws.” Nancy Northup is head of the Center for Reproductive Rights. She said last Friday, “We’ll be back in court tomorrow and the next day and the next day” to argue these cases. Brigitte Amiri of the American Civil Liberties Union (ACLU) said the organization is looking at “all options” to protect access to abortion.