The US Customs and Border Protection launched an electronic portal to process $166 billion in tariff refunds after the Supreme Court invalidated trade measures imposed under the International Emergency Economic Powers Act.Thousands of businesses, ranging from major retailers to small enterprises, are submitting claims while facing the implementation of new 10% tariffs under the Trade Act of 1974.Experts anticipate a complex reimbursement process that may take up to 90 days as the administration attempts to balance historical legal rectifications against ongoing national trade policy shifts.