France, Aug. 25 -- France and other European postal services are halting parcel deliveries to the United States as the end of a key duty-free rule throws transatlantic shipping into turmoil.

France's national postal service, La Poste, has announced it will suspend most parcel deliveries to the United States, as confusion swirls around new American import rules.

The move, which takes effect Monday, puts France among the growing list of European postal operators hitting pause on shipments across the Atlantic.

At the heart of the disruption is the end of the long-standing "de minimis" exemption, which has allowed packages worth under $800 to enter the US duty-free.

Last year alone over one billion such parcels arrived in the US under thi...