On Monday, the U.S. Customs portal will start accepting refund requests from businesses that paid President Trump’s tariffs before the Supreme Court ruled them unconstitutional. Nickolai Hammar/NPR hide caption toggle caption Nickolai Hammar/NPR After weeks of waiting to hear how — or whether — the U.S. government might refund the tariffs struck down by the Supreme Court, Monday is the day it finally begins. Imagine tens of thousands of business owners with their fingers hovering over laptops, ready to enter America’s hottest new queue: the U.S. tariff refund portal. U.S. Customs is launching just the first phase of payouts, so not all the goods imported under the illegal tariffs will immediately qualify. And the latest federal guidance says that after refund requests are approved, it could take 60 to 90 days to return the money to the importer. Still, this marks a turning point for U.S. importers, who’ve waited for clarity for exactly two months since the U.S. Supreme Court declared most of President Trump’s tariffs unconstitutional. The high court did not opine on the …