DS543 brings the broadening of public morals exception back into focus. The Panel blurrs the notion of public morals and economic policies by misinterpreting the relationships between public morals and economic concerns, refusing to decide on whether those tariff measures are designed to protect public morals and whether the subject of those measures should be limited to those closely-related products. This act not only leads to differences in the application of treaty interpretation by the WTO in similar cases, but also serves as a basis for exemptions from acts of trade protectionism and moral imperialism. The WTO should explain the differences between public morals and economic concerns by rebalancing the interest of free trade and public morals, setting forth clear criteria for proving and reviewing public morals objective as well as the structure and design of trade measures. China should resist the acts of unilateralism that contribute to the broadening of public morals exception, drawing on US’s failure so as to protect the public morals interests in a lawful manner.