The Trump administration’s tariff refund system is more than 40 percent developed, a customs official told a federal judge Thursday, and additional performance testing will take place “in the next few weeks.” Businesses are pushing for speedy refunds of the $166 billion in levies the Supreme Court struck down last month, but the administration has warned it will still take time to re-route the funds back to the roughly 330,000 importers who paid them….
