A particular challenge is the government-owned United States Postal Service (USPS). Although USPS only accounted for about 5% of last year's total de minimis shipments, some 75 million parcels, experts described it as the Achilles heel of any policy to remove tariff exemptions on low-value shipments. USPS, with a history developed around the receiving and sending of letters, is not set up to assess and process duties on packages of sweaters, shoes and headphones coming from abroad.
Express carriers like FedEx, UPS and DHL have in-house customs brokerage divisions that collect any tariffs owed by package recipients, and these companies often handle every step of a delivery, from drop-off to doorstep. In contrast, USPS receives items from foreign postal services that are flown into a handful of international mail facilities at major U.S. airports. These packages often arrive with limited information about their contents. In addition, USPS is not set up to process tariffs.
"The postal service has absolutely no way, themselves, to collect duty or pay duty to the government," said Cindy Allen, CEO of Trade Force Multiplier, an international trade consultancy service, and a former CBP official.