美关税内斗威胁国际贸易体系稳定

Group 1 - The U.S. Supreme Court ruled that the large-scale global tariff policy implemented by the Trump administration under the International Emergency Economic Powers Act lacks legal authorization, overturning a key policy tool used to impose tariffs unilaterally since 2025 [3] - Following the Supreme Court's ruling, Trump signed an executive order to impose a 10% import tariff on global goods starting February 24, which was later increased to 15%, indicating a continued aggressive stance on tariffs despite legal challenges [3] - The new tariffs have heightened uncertainty in U.S.-EU trade relations, leading the European Parliament's International Trade Committee to propose suspending the approval of the U.S.-EU trade agreement until legal clarity is achieved [4] Group 2 - Multiple countries, including Switzerland, Singapore, and South Korea, have expressed concerns that the new U.S. tariffs will increase global economic uncertainty and negatively impact investment and exports [5] - The instability in trade policies is expected to disrupt the international trade system, as the Trump administration's unilateral tariff measures undermine the multilateral trade rules established by the World Trade Organization [6][7] - The weakening of multilateral trade rules is likely to disproportionately affect developing countries, which are more vulnerable to tariff impacts due to their high export concentration and limited capacity to absorb shocks [7]