Because there's a added delivery tariff coming into the USA now. Trump imposed in recently.
https://www.latimes.com/world-nation/story/2025-09-06/postal-traffic-to-us-sank-80-after-trump-administration-ended-exemption-on-low-value-parcels
Postal traffic to U.S. down 80% after Trump ended exemption on low-value parcels
Associated Press
Sept. 6, 2025 9:54 AM PT
Postal traffic to the United States plunged 80% after the Trump administration eliminated tariff exemptions for imported goods valued under $800.
Eighty-eight postal operators worldwide suspended services because carriers cannot collect the newly required customs duties on low-value parcels.
The change ends a duty-free exemption that existed since 1938, with tariffs now ranging from 10% to 50% on previously exempt goods.
Postal traffic into the United States plunged by more than 80% after the Trump administration ended a tariff exemption for low-cost imports, the United Nations postal agency said Saturday.
The Universal Postal Union says it has started rolling out new measures that can help postal operators around the world calculate and collect duties, or taxes, after the U.S. eliminated the “de minimis” exemption for lower-value parcels.
Eighty-eight postal operators have told the UPU that they have suspended some or all postal services to the United States until a solution is implemented with regard to U.S.-bound parcels valued at $800 or less, which had been the cutoff for imported goods to escape customs charges.
“The global network saw postal traffic to the U.S. come to a near-halt after the implementation of the new rules on Aug. 29, 2025, which for the first time placed the burden of customs duty collection and remittance on transportation carriers or U.S. Customs and Border Protection agency-approved qualified parties,” the UPU said in a statement.
The UPU said information exchanged among postal operators through its electronic network showed traffic from its 192 member countries — nearly all the nations in the world — had fallen 81% on Aug. 29 compared with a week earlier.
The Bern, Switzerland-based agency said the “major operational disruptions” have occurred because airlines and other carriers indicated they weren’t willing or able to collect such duties, and foreign postal operators had not established a link to CBP-qualified companies.
This is Trump's own doing.