A Federal Register package published Monday changes the U.S. entry calculation for a wide group of Canadian goods at 12:01 a.m. Eastern on September 15. Proclamation 11065 adds some products to a 50% Section 338 duty and removes others, using the date goods are entered for consumption or withdrawn from warehouse for consumption as the operative clock.
The additions reach well beyond a conventional auto shipment. Annex I lists certain non-cow's-milk cheese, writing and drawing paper, iron or steel structural items, aluminum profiles, bars and tubes, flexible metal tubing, welding electrodes and wire, golf carts, small-engine passenger vehicles, large outboard motors, seats, furniture, mattresses and lamps. Those descriptions summarize dozens of tariff provisions; they are not a substitute for the exact HTSUS line.
The same annex removes the 50% additional duty from another list. It includes salt and pure sodium chloride, non-white Portland cement, chemically pure sugars, specified household paper stock and articles, unwrought refined lead, certain low-voltage switchgear assemblies and fishing-rod parts. Removal from this Section 338 list does not mean duty-free entry because the proclamation says the modified duties sit alongside other applicable measures.
That product mix is why the document's motor-vehicle title should not become a shipment rule of thumb. The proclamation says its descriptions are informational and directs classification questions to U.S. Customs and Border Protection. A Canadian origin, an automotive customer or a familiar commercial description cannot by itself establish whether the 50% rate was added, retained or removed.
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The duty can also stack with Section 232 treatment. Proclamation 11065 says the Section 338 duty applies in addition to duties imposed under Section 232 of the Trade Expansion Act. FreightNews therefore does not infer a delivered-price change by applying one headline percentage to every Canadian load; the entry needs its own classification, origin, value, other-duty treatment and contract allocation.
A second proclamation creates a later and narrower prohibition. Proclamation 11063 excludes Canadian motorcycles, including mopeds, with reciprocating internal-combustion piston engines above 800 cubic centimeters from importation beginning at 12:01 a.m. Eastern on September 29. It says covered goods imported before that date but not yet entered for consumption or withdrawn from warehouse remain subject to the 50% rate rather than the ban.
The documents therefore use two different timing tests: entry or warehouse withdrawal controls Tuesday's tariff-table change, while import status matters for the September 29 motorcycle transition. FreightNews infers that customs, transportation and warehouse teams need a shared timestamp record before changing a route, release or customer quote. Vessel arrival, border crossing, warehouse admission and consumption entry are not interchangeable milestones.
The market signal is national because the added and removed lines span industrial materials, paper, furniture, consumer goods and selected vehicles moving through multiple gateways. The proclamations do not publish expected import volumes, truck counts, border wait times, freight rates or retail prices. They change legal treatment for listed goods; any capacity or demand response remains a product- and customer-specific inference.
Importers, brokers, carriers and warehouses should build an exception file for exposed shipments: HTSUS provision, country of origin, producer, product description, value, current location, arrival time, entry or withdrawal time, applicable Section 232 treatment, broker confirmation and the contract term assigning duties or cancellation risk. Hold only the loads that need a classification or instruction decision, and keep unrelated Canadian freight moving on verified entry plans.