The justices had put off action on the case for several months. Justice Ruth Bader Ginsburg, an abortion-rights proponent, died just before the court’s new term began in October. Her replacement, Justice Amy Coney Barrett, is the most open opponent of abortion rights to join the court in decades.
Barrett is one of three appointees of former President Donald Trump on the Supreme Court. The other two, Justices Neil Gorsuch and Brett Kavanaugh, voted in dissent last year to allow Louisiana to enforce restrictions on doctors that could have closed two of the state’s three abortion clinics.
Chief Justice John Roberts, joined by Ginsburg and the other three liberal justices, said the restrictions were virtually identical to a Texas law the court struck down in 2016.
But that majority no longer exists, even if Roberts, hardly an abortion-rights supporter in his more than 15 years on the court, sides with the more liberal justices.