Core Viewpoint - The U.S. Supreme Court's ruling on presidential tariff powers could significantly impact the market by the end of the year, with uncertainty surrounding tariffs persisting regardless of the court's decision [1] Group 1: Court's Stance and Market Reactions - The Supreme Court justices expressed skepticism about Trump's authority to impose tariffs under the International Emergency Economic Powers Act (IEEPA), as the law does not explicitly mention tariffs [1] - Internal divisions among the justices are evident, with 4 justices likely opposing the government's stance, while 3 support it, and 2 are undecided [2] - Market expectations fluctuated during the hearings, with the probability of tariffs being upheld dropping from 40% to around 30% [2] Group 2: Economic Impact and Refund Procedures - Even if the court rules against the tariffs, the market should not expect an immediate policy reversal, as refund processes could take months and depend on further legal actions by importers [3] - As of September, approximately $89 billion in IEEPA tariffs had been collected, with projections suggesting this could rise to between $115 billion and $145 billion by the time of the court's ruling [3] - Experts warn that the cancellation of tariffs could lead to greater chaos, with potential for increased uncertainty and a significant rise in the U.S. fiscal deficit due to large refund amounts [3] Group 3: Alternative Legal Options for Tariffs - The Trump administration has multiple alternative legal tools to impose tariffs if the IEEPA is rejected, including provisions from the Trade Act of 1974 and the Trade Expansion Act of 1962 [4] - Goldman Sachs indicates that the government could quickly reimplement similar tariffs using these alternative laws, particularly against major trading partners [4] - The net impact on tariffs for major trading partners may be minimal, with actual tariff rates potentially decreasing by only about 1 percentage point [4]