Overview
- Formal talks collapsed in mid‑August after Canada recalled its delegation, and the U.S. responded with roughly 50% duties on about $20 billion in Canadian goods.
- The U.S. has invoked Section 338 to authorize targeted import bans that are scheduled to begin on Sept. 29, adding a hard deadline for a negotiated fix.
- Canada enacted dollar‑for‑dollar retaliatory duties that took effect on Sept. 8, taxing roughly $20–28 billion of U.S. exports including aluminum, dairy and machinery.
- Labor unions, state officials and some Republican senators have publicly opposed the tariffs, and recent polls show voter anger in swing states giving Democratic challengers new traction.
- Analysts warn the measures threaten integrated auto and manufacturing supply chains, could raise consumer prices, shift production toward Mexico, and invite legal and further policy retaliation.