War with Canada · Current Measures
What Is Actually in Force
A controlled-status account of the Section 338 duties, exclusions, and implementation sources.
Three presidential proclamations impose an additional 50 percent ad valorem duty on listed Canadian products through HTSUS headings 9903.03.12, 9903.03.13, and 9903.03.14. Proclamation 11056 moved the effective date from August 19 to August 22, 2026.
- IN FORCE
- U.S. Section 338 duties. Listed goods entered for consumption, or withdrawn from warehouse for consumption, on or after 12:01 a.m. Eastern on August 22.
- VERIFY CURRENT
- HTSUS coverage. Classification, exclusions, and technical corrections must be checked against the current Harmonized Tariff Schedule and customs guidance.
- IN FORCE
- Existing Canadian counter-tariffs. Canada’s steel, aluminum, and automobile measures remain subject to their governing orders and remission programs.
- ANNOUNCED
- Additional Canadian response. Do not describe the proposed September 8 response as operative until Canada publishes the final legal instrument and tariff schedule.
Three baskets—not a blanket tariff
Alcohol · 9903.03.12
Beer, wine, spirits, and additional listed goods. The proclamation alleges discriminatory provincial restrictions on U.S. alcoholic beverages.
Dairy · 9903.03.13
Dairy products and additional listed goods. The findings concern differing cheese tariff-rate-quota treatment under USMCA and CETA.
Motor vehicles · 9903.03.14
The largest and broadest retaliatory basket, extending beyond vehicles to numerous agricultural, apparel, household, cultural, and sporting goods.
Coverage limits
- Articles already subject to specified Section 232 duties are excluded under the proclamations.
- Most civil-aircraft agreement articles are excluded, subject to the proclamation language.
- Foreign-trade-zone merchandise may require privileged foreign status under 19 C.F.R. part 146, subpart D.
- The duties generally stack with other applicable duties, taxes, fees, exactions, and charges unless an exception applies.
Scale of the package
The Federal Reserve Bank of Chicago counted 569 eight-digit tariff categories and estimated approximately $24 billion in annual affected trade using May 2026 data—about 5.5 percent of imports from Canada. USTR described nearly $20 billion in covered value. Present the result as a range and identify the source and method.