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 reroute the funds back to the roughly 330,000 importers who paid them….
