That cudgel is no longer his — at least not to wield so freely. Chief Justice John Roberts wrote that the words “regulate importation” in the law underpinning those levies, known as IEEPA, “cannot bear the weight” of giving a president the power to tax independent of Congress. Despite claiming the decision would have little impact, Trump was visibly frustrated at a White House news conference yesterday, explicitly chastising the conservative justices Neil Gorsuch and Amy Coney Barrett — both of whom he appointed — who joined the majority ruling.