Justice Amy Coney Barrett pressed Solicitor General John Sauer on President Donald Trump’s tariff authority, citing precedent, while Justice Sonia Sotomayor urged direct answers, showing sharp Supreme Court debate over presidential trade powers. Justice Amy Coney Barrett pressed Solicitor General John Sauer on President Donald Trump’s tariff authority, citing precedent, while Justice Sonia Sotomayor urged direct answers, showing sharp Supreme Court debate over presidential trade powers.