Trump’s tariffs are not only unjustified, but also immoral. U.S. average tariff rateReciprocity in Trump’s tariffs? It is fair to say that Trump’s tariffs are not only unjustified, but also immoral. Trump’s high-handedness is also reflected in his approach to the multilateral trading system. And by charging WTO members different tariff rates, Trump has shaken its foundation — the most-favored nation principle — leaving the WTO in tatters.