The suspension of IEEPA tariff collections aligns with Trump’s move to introduce a new 15% global tariff under the 1974 Trade Act, replacing the measures invalidated by the court on Friday.
CBP did not explain why collections continued at ports for several days after the ruling, and the notice did not address whether importers would receive refunds. The agency stated that the halt applies only to IEEPA-based tariffs and does not affect duties imposed under Section 232 on national security grounds or Section 301 addressing unfair trade practices.
“CBP will provide additional guidance to the trade community through CSMS messages as appropriate,” the agency said.
According to estimates cited by Reuters from the Penn-Wharton Budget Model, the Supreme Court decision places more than $175 billion in tariff revenue collected under IEEPA at risk of potential refunds. The model estimated that the IEEPA tariffs had been generating over $500 million per day in gross revenue for the US Treasury.
