The Trade War That Left Out the Oil

1. Washington revives a 96-year-old statute for 554 tariff lines

The tariffs took effect at one minute past midnight on Saturday, after three days of talks in Washington ended with Carney walking out and saying the Americans "asked too much and they offered too little". Fifty per cent on roughly $20 billion of annual Canadian exports, about 5.2% of the $382 billion of goods the United States bought from Canada last year. Not a large number. The way it was done is the story.

The authority is Section 338 of the Tariff Act of 1930, the same act that carries the Smoot-Hawley name, and there is no public record of any president actually imposing duties under it since at least 1949. It lets the president act on a finding that a foreign country discriminates against American commerce, caps the rate at 50%, and requires thirty days' notice. Which means the 50% is not an opening bid dressed up as one. It is the ceiling the statute allows, reached on day one.

Read the annexes and the point sharpens. Three proclamations, on dairy, alcohol and motor vehicles, spill across 554 tariff lines into milk and whey, wine and cider, ice hockey equipment, Portland cement, plywood, wigs, chandeliers, smartphones, fishing rods, swimming pools and Christmas ornaments. And they apply to goods that qualify as originating under the USMCA, which is to say the continental trade agreement offered Canadian exporters no protection whatsoever against a law written six decades before it was signed.

The read: the instrument matters more than the invoice. A trade agreement that a dormant Depression-era clause can override is not a floor, it is a courtesy that lasts as long as the courtesy does. Every other capital with a signed American trade deal spent this weekend reading the same statute. What do they think their own paper is worth now?

2. The loonie loses half a cent while Toronto sets a record

Given the language coming out of Ottawa, the market reaction was almost insulting. The Canadian dollar had reached 1.376 to the US dollar on Friday, a three-month high, and by Monday's session it sat near 1.383, roughly half a cent weaker. On the same Monday the S&P/TSX Composite closed at 36,620, a record, roughly 30% above where it traded a year ago. That is not a country pricing an economic emergency. That is a country pricing an inconvenience.

The reason is sitting in the exemption. Energy was left out entirely. The United States imports about four million barrels a day of Canadian crude, which was 63.4% of all the crude it bought from abroad last year, and Canada sends roughly 90% of its exports south because the refineries in the American midcontinent were physically built for Alberta's heavy sour barrels and cannot easily be fed anything else. Neither side has touched it, and neither side wants to be the one who does.

There is a second reason Toronto keeps printing highs, and it is less flattering. The TSX is an energy and mining index, and Brent above $100 since the Hormuz disruption has lifted it all summer. The shock pushing Canadian petrol up 25.7% on the year is the same shock inflating the index that says everything is fine.

The read: the market did not price a trade war, it priced the carve-out, and the carve-out is a bet that neither government ever reaches for the one lever that would actually hurt. Leverage you can never use is not leverage. It is dependency with better manners, and Ottawa has just spent a week discovering the difference.

3. Carney taxes Canadian shelves six days after Macklem decides

The retaliation lands on September 8: dollar for dollar, aimed at American steel, dairy, appliances, agricultural equipment, pulp and paper and electronics, with the product lines still to be published. The Bank of Canada meets on September 2. Six days earlier.

Look at what Tiff Macklem is carrying into that room. The policy rate has sat at 2.25% through six consecutive meetings. July inflation came in at 3.0%, up from 2.8%, almost all of it gasoline running 25.7% above last year as Hormuz did its work on global fuel. Underneath, the Bank's own core measures behaved: CPI-trim at 1.9%, CPI-median at 2.0%. Unemployment fell to 6.4%, a two-year low that broke the 6.5% to 7% band the labour market had occupied since late 2024, and the second quarter has been tracking near 3.4% annualised. On that data a seventh hold writes itself.

Then note who pays the retaliation. A Canadian tariff on American steel and appliances and farm machinery is a tax collected at the Canadian border, on goods that Canadian firms and Canadian households buy, and it lands in the Canadian consumer price index rather than the American one. Ten days ago this publication's Australia desk described a central bank that would not take the world's memo on cuts. Canada's problem is the reverse and sharper: Macklem's inflation path for the autumn is no longer his to forecast, because it is being drafted in a tariff schedule down the road. Carney ran that building from 2008 to 2013 and the Bank of England after it. He knows exactly which line of the index he is about to move.

The read: a former central banker is preparing to hand his successor an imported price shock six days after a rate decision and describe it as defending Canadian workers. Both things can be true. But is a tariff you levy on your own shelves a defence, or a rate hike you get to blame on somebody else?

The week ahead

• Second quarter GDP, August 28: Statistics Canada publishes the quarter that monthly data has been tracking near 3.4% annualised. It is the last clean read on the Canadian economy before any of this touches it.
• Ottawa's retaliation list, in the coming days: the sectors are named and the tariff lines are not, and the lines are what decide how much of the September 8 measure ends up in Canadian consumer prices rather than in American export books.
• Bank of Canada, September 2: a seventh hold on 2.25% is the easy call with core inflation inside target. The harder question is whether the statement acknowledges that its own government is about to move the price level.