President Trump has imposed and adjusted 50% Section 338 tariffs on targeted Canadian imports in motor vehicles, dairy, alcoholic beverages, and related sectors to offset alleged Canadian discrimination against U.S. exports, with some product scopes modified in September 2026 to add items like certain cheeses and ATVs while removing others such as cement and salt. Canada responded with matching retaliatory tariffs on roughly $27.6 billion of U.S. goods, including doubled duties on steel and aluminum, after trade talks collapsed. These actions build on prior Section 232 measures and occur alongside USMCA implementation issues, with no verified announcements of broad tariff reductions to date. Future developments hinge on bilateral negotiations, potential USMCA revisions, or executive actions addressing the ongoing trade dispute.