特朗普2.0关税“天书”难倒进口商，最高法院裁决引爆市场焦虑

Group 1 - The complexity of the U.S. tariff system has significantly increased, with the 2026 "base" version of the Harmonized Tariff Schedule exceeding 4,500 pages, an increase of over 100 pages from the previous year and 800 pages since 2017 [2][3] - The average tariff rate for consumers is calculated to be 16.8%, indicating a substantial financial burden on businesses and consumers alike [3] - There are currently 17 different tariff measures applicable to major U.S. imports, up from just 3 in 2017, highlighting the growing regulatory complexity [4] Group 2 - The upcoming Supreme Court ruling on the legality of emergency tariffs imposed by the Trump administration could have significant implications for financial markets, with the case involving approximately $100 billion in government revenue [5] - Since early 2025, over $200 billion in tariffs have been collected, with an estimated 55% of this revenue coming from tariffs that are legally questionable [5] - Regardless of the Supreme Court's decision, the complexity of tariffs will persist, particularly for tariffs on steel, automobiles, and other industries, which account for the remaining 45% of tariff revenue [6] Group 3 - If the Supreme Court rules against the Trump administration, hundreds of entries in the tariff schedule may need to be quickly adjusted, causing additional headaches for businesses [6] - Companies are preparing for potential refunds if the Supreme Court determines that certain tariffs were illegally imposed, with significant financial implications [6] - The refund process is expected to be complicated and lengthy, involving numerous lawsuits, and companies may not receive immediate financial relief even if tariffs are overturned [6]