The new order goes into effect October 30, 2026. The original imposition of tariffs on the PE and PP fabricated products, and many others, was announced on July 20, 2026, as retaliation against punitive measures by Canada on imports of automobiles from US. (Proclamation 11048 Imposing Additional Duties to Offset Canadian Discrimination Against the Commerce of the United States with Respect to Motor Vehicles.)

The products added, removed and re-added is available on White House Presidential Orders.

The US imports relatively small volumes of PE bags and sacks from Canada. Through August these totaled 76,700 tons, down 30%, out of total US imports of 637,500 tons, down 16%.

US imports of PP film/sheet from Canada were 23,100 tons through August, up 23%, out of total US imports of 230,000 tons, up 6%.

A 50% tariff will now be applied to US imports from Canada of bottle grade PET. Through August 2026 these totaled 48,900 tons, up 39%, out of total US imports of 820,700 tons, down 6%.

US imports of elastomeric polyurethanes from Canada, also now to see a 50% duty, totaled 1,800 tons through August, down 84%, out of total US imports of 15,700 tons, down 46%.

From International Trader Publications’ US Polymer Trade Report, a monthly analysis of US imports and exports of all grades of polyethylene, polypropylene, styrenic polymers, PVC, PET, recyclable polymers and major fabricated plastic products.