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CUSMA in Annual Review, Mushroom Duties Land and Eight Days to the Section 122 Cliff

The week ending July 16 was defined by two confirmed structural shifts in North American trade and one immovable deadline now eight days away. The Commerce Department's July 14 preliminary anti-dumping determination on Canadian fresh mushrooms — 8.26% versus the 44% the Fresh Mushrooms Fair Trade Coalition sought — confirmed that targeted product-level enforcement is now operating in parallel with the broader Section 301 forced-labor framework. Investigated since January 6, 2026, the mushroom case is a template for how the administration is layering instruments: a country-level floor via Section 122 (expiring July 24), a replacement floor via Section 301 (10% on Canada, effective July 25), and a product-specific overlay via anti-dumping. Canadian agricultural exporters face a genuinely complex compliance picture, and the CVD investigation remains open.

CUSMA's transition to annual review mode — formalized when USTR Greer declined Canada and Mexico's joint extension request on July 1 — continues to reshape the strategic calculus for $1.3 trillion in annual North American trade. The agreement remains in force through July 2036, and ~88% of Canadian exports retain USMCA-compliant status exempting them from Section 301 forced-labor tariffs. But the refusal to lock in a 16-year extension to 2042 means every annual review now carries the implicit threat of withdrawal with six months' notice. Combined with the CANADA Act (introduced July 6 targeting provincial alcohol bans) and the mushroom anti-dumping case, the bilateral irritant list is growing faster than it is being resolved. Canada's PM Carney has committed to forced-labor enforcement legislation, which may partially address USTR's stated rationale for the 10% tier classification.

The Section 122 hard stop at 12:01 AM EDT on July 24 remains the single most consequential event on the immediate calendar. USTR's target of July 20–24 for finalizing Section 301 forced-labor rates leaves almost no margin for administrative delay; the July 7 hearing is complete and post-hearing rebuttal comments are due within five days of the last hearing day. The Federal Circuit's June 11 longer-lasting stay means the 10% rate continues to be collected from all non-plaintiff importers until then. Whether Section 301's final Federal Register notice arrives before or after midnight on July 24 will determine whether there is any gap in tariff coverage — and whether goods in transit at the moment of expiry qualify for the lower 10% rate rather than the 12.5% replacement applicable to most non-CUSMA trading partners.

The Brazil Section 301 determination — due July 15 under statutory deadline — adds a further layer of complexity. A confirmed 25% tariff on ~$15 billion in Brazilian goods, stacked against the 12.5% forced-labor rate that takes effect July 25, creates potential combined exposure of 37.5% for certain Brazilian products. Over 1,600 HTS codes are exempt including coffee, beef and orange juice, but the remaining product universe is substantial. The EU-US Turnberry deal, now two weeks into its July 1 effective date, faces its own stacking question: whether the 10% Section 301 forced-labor tariff on EU goods is applied within the 15% all-inclusive ceiling or on top of it. The final Federal Register notice for Section 301 forced-labor rates — expected in the coming week — will answer that question and either confirm or stress-test the deal's legal architecture.

Section 122 at 10%, SCOTUS ruling in effect, Sec 232 metals overhaul effective Apr 6, pharma tariffs announced, CAPE portal live Apr 20, Section 301 probes underway.