Wall Street futures slip amid Trump tariff uncertainty.

The U.S. Supreme Court struck down emergency tariffs and President Trump announced a new 15% tariff; Wall Street futures and the U.S. dollar fell while gold and safe-haven currencies gained.

The U.S. Supreme Court recently struck down emergency import tariffs, and the administration announced a replacement rate that was raised to 15 percent over the weekend. Markets moved on the news, with U.S. futures and the dollar sliding while gold and safe-haven currencies strengthened. Analysts and research groups have offered estimates of how average tariff rates may change under the announced approach. It remains unclear when the new tariffs would take effect or which countries might be excluded. What happened: - The U.S. Supreme Court struck down the earlier emergency tariff measures, as reported. - The administration announced a new tariff rate that was initially set at 10% and then raised to 15% on Saturday. - U.S. stock futures and the U.S. dollar declined; gold and currencies such as the yen and Swiss franc rose. - The Yale Budget Lab reported that the overall average effective tariff rate would change under the announcement and noted the announced 15% rate would be expected to expire after 150 days under the 1974 Trade Act. Summary: Markets showed immediate reactions to the legal and policy developments, with modest downward moves in U.S. futures and the dollar and upward moves in safe-haven assets. The legal and implementation path for the new tariff measures is not settled, and the timing and scope of any exclusions remain unclear. Undetermined at this time.