Core Viewpoint - The U.S. Supreme Court ruled that the Trump administration's imposition of tariffs under the International Emergency Economic Powers Act lacked clear congressional authorization, marking a significant check on executive power [1][3] Group 1: Legal and Regulatory Changes - Following the Supreme Court's ruling, Trump quickly signed a new executive order imposing a 10% global import tariff under the Trade Act of 1974, which he later increased to 15% [2][3] - The Trade Act of 1974 allows the president to impose tariffs in cases of trade imbalance, but these tariffs are limited to 150 days unless Congress approves an extension [3] - The ruling emphasizes the "major questions doctrine," requiring explicit congressional authorization for actions with significant economic and political implications [1][4] Group 2: Economic Impact - The economic cost of the tariffs has been substantial, with U.S. consumers and businesses bearing nearly 90% of the tariff burden, totaling over $200 billion in tariffs collected by 2025 [4][5] - The Wharton Budget Model estimates the total tariff cost could exceed $175 billion, indicating a significant financial impact on the economy [4] Group 3: Business Reactions and Future Uncertainty - Business groups welcomed the Supreme Court's decision, viewing it as a necessary clarification that could stabilize global supply chains [4][5] - However, concerns remain regarding the potential for the government to impose new tariffs through other legal mechanisms, creating uncertainty for long-term business planning [5][6] - The introduction of new tariffs has led to increased uncertainty in trade policy, which could negatively affect capital expenditures [6]