U.S. tariffs on Canadian dairy and steel advance as bilateral trade volume hits $680 billion

The move follows USTR notifications and Canadian retaliatory lists filed in 2018 and 2024. Primary records show the U.S. citing Section 232 and 301 authorities to adjust market access, while Canada documented mirror measures on U.S. agricultural and automotive exports. Both sides record unchanged positions in the USMCA dispute-settlement annexes.

U.S. incentives center on shielding domestic producers and extracting concessions in dairy quotas and energy pipelines. Canadian records emphasize retention of integrated auto supply chains and avoidance of higher input costs that would reduce manufacturing employment in Ontario and Quebec. Neither side has altered its statutory tariff schedules.

Data from the U.S. Census Bureau and Statistics Canada confirm the $680 billion annual goods flow, with energy and vehicles comprising the largest shares. Imposition of duties would raise input prices for U.S. refiners and Canadian assembly plants without altering underlying comparative advantage.

Next steps hinge on the scheduled USMCA review in 2026 and any new executive orders altering tariff lines before then. No joint statement has revised the existing commitments.