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USMCA

The move lands in the middle of ongoing USMCA renewal talks, and it does so using a legal tool so old that trade lawyers spent the days after the signing re-reading a statute most had never expected to see applied. Fortune was among the first outlets to note the historical significance: Section 338 has sat largely dormant since the 1930s, superseded in practice by newer trade authorities that presidents have preferred because they carry fewer legal uncertainties.

• The tariffs apply to a specified list of Canadian goods, some of which would otherwise cross the border duty-free under USMCA rules of origin.
• The White House has framed the action as retaliation for what it calls discriminatory treatment of American goods and producers.
• The 19 August effective date gives importers roughly a month to adjust supply contracts and inventory before the higher rate applies.
• No comparable action has been taken against Mexico, the other USMCA partner, at least for now.