The uproar over the Arizona Supreme Court’s decision this past April to uphold the state’s 1864 abortion law has laid bare a profound misunderstanding of the judiciary’s role in our democracy. In April, the court ruled 4-2 (with one justice recused) that the old law’s complete ban on abortion, enacted when Arizona was still a territory, sprang back into place once the U.S. Supreme Court overturned Roe v. Wade in its June 2022 Dobbs decision. A 15-week restriction that the state legislature passed...