WASHINGTON — The U.S. Supreme Court ruled Friday that President Donald Trump had overstepped his authority in tapping emergency economic powers to impose tariffs — a rare rebuke dealing a sharp blow to his economic agenda. What are the ramifications of the conservative-majority court's decision, and is it possible for the Trump administration to reinstate duties? Lower tariffs for now The average U.S. tariff rate is likely to drop — at least temporarily — with some duties imposed under the International Emergency Economic Powers Act (IEEPA) ruled illegal. "Without IEEPA tariffs, consumers will face an overall average effective tariff rate of 9.1 percent, which remains the highest since 1946 excluding 2025," said The Budget Lab at Yale University. If the IEEPA tariffs remained in effect, this figure would have been 16.9 percent instead. Even if the Trump administration replaced the struck-down tariffs, it is likely the new levels will be lower than before, analysts say. "It will force a reset in tariff policy that is likely to lead to lower overall tariff rates and a more orderly imp