Escalating U.S.-Canada trade tensions, marked by 50% Section 338 tariffs on select Canadian imports effective since August 2026 and Canadian retaliatory measures on U.S. steel, aluminum, dairy, and other goods from September, have driven low implied probabilities for any near-term Trump announcement of tariff decreases. Negotiations collapsed repeatedly over autos, dairy, alcohol, and sovereignty provisions, with U.S. Trade Representative Jamieson Greer describing outstanding issues as difficult to resolve and noting no urgency from the administration. Canada under Prime Minister Mark Carney has matched U.S. actions dollar-for-dollar while rejecting terms seen as limiting future trade deals. Recent import bans on Canadian products took effect September 29, alongside threats of further 50% duties on Canadian autos and parts from January 2027. Trader pricing aligns with the current standoff and absence of scheduled de-escalation milestones in the near term.