Tomorrow, President Donald Trump will face the biggest legal test yet of his second term when the U.S. Supreme Court hears oral arguments in Learning Resources v. Trump, the case challenging the president's supposed authority to unilaterally impose tariffs without first receiving explicit authorization from Congress.
But tomorrow's case is also a big test for Chief Justice John Roberts. Just two years ago, Roberts led the Supreme Court in rejecting a similar claim of unilateral executive power by then-President Joe Biden. If Roberts now allows Trump to get away with the same kind of executive overreach that Roberts previously stopped Biden from getting away with, Roberts' credibility as a principled judicial arbiter will be sullied forever.
