The below was taken in part from the NCBFAA:

This morning, December 3rd, the Office of the US Trade Representative (USTR) published a Federal Register notice confirming that most tariff changes resulting from the mid-November agreement between the United States and South Korea (and outlined in a November 13th fact sheet) apply retroactively: to November 1st, 2025, for automobiles and auto parts, and to November 14th, 2025, for other applicable product imports from South Korea.

Specifically, the modifications to the HTSUS in Part A of the Annex are effective for automobiles and automobile parts entered for consumption, or withdrawn from warehouse for consumption, on or after 12:01 AM EST on November 1st, 2025. The modifications to the HTSUS in Part B of the Annex are effective for goods subject to country-specific reciprocal tariffs—including timber, lumber and their derivatives, and certain aircraft and aircraft parts—entered for consumption, or withdrawn from warehouse for consumption, on or after 12:01 AM EST on November 14th, 2025.

More details are available in the USTR Federal Register notice, which can be found here.

RIM logistics, ltd. will continue to closely monitor this evolving situation and provide updates as necessary. Please reach out to your RIM representative if you have any further questions.