The tariff trolley by Zakir Hall

Donald Trump’s latest tariff threat has the peculiar logic of a supermarket quarrel conducted with a battering ram. On August 19th, the president threatened duties of 50% on Canadian goods, presenting the measure as retaliation for what America regards as unfair practices by Canadian provinces that do not buy enough American products. The argument is so wonderfully disproportionate that it almost sounds like political satire: someone declines to put American cheese in the shopping trolley, therefore an entire trade relationship must be punished.

Tariffs, however, are not an especially sophisticated instrument for settling bruised feelings. They are taxes imposed at the border, and their costs do not politely remain on the other side. They travel through importers, manufacturers, retailers and, eventually, consumers. A tariff aimed at Canadian goods can become an American surcharge on ordinary life, turning a dispute over purchasing preferences into higher prices for businesses and households that had nothing to do with the quarrel.

This is the strange Trumpian habit of treating international commerce as an extension of personal grievance. Countries are imagined as shoppers who have somehow insulted the cashier. Trade deficits become evidence of cheating; foreign competition becomes disloyalty; and the complexity of integrated supply chains is reduced to a morality tale in which America is perpetually being mugged in broad daylight.

Canada is hardly some distant commercial antagonist. Its economy is deeply interwoven with America’s, from energy and agriculture to manufacturing and logistics. Goods cross the border repeatedly before becoming the products Americans eventually purchase. A punitive tariff therefore risks resembling a man setting fire to his neighbour’s shed because he dislikes the price of the neighbour’s lawnmower, only to discover that his own garage shares the same wall.

The most revealing part of the threat is its collective punishment. If a Canadian province makes purchasing decisions that Washington dislikes, why should an American factory worker, grocer or consumer bear the consequences? The tariff does not distinguish between a provincial government, a supermarket chain and a family buying dinner. It simply arrives with a tax collector’s blank expression.

There is also something intellectually lazy about the underlying assumption that patriotic consumption can be commanded into existence. Consumers do not necessarily reject American products because they hate America. They buy what is affordable, available, familiar or good. A bottle, tin or packet does not carry a passport into the supermarket aisle. Commerce works precisely because people are allowed to choose.

Trump’s approach turns that freedom into a grievance. If consumers choose Canadian goods, Washington threatens Canada. If Canada retaliates, American exporters suffer. If prices rise, someone else will presumably be blamed. The circle is complete, and the politics becomes less about economic strategy than about demonstrating that nobody can refuse America without being punished.

That may produce applause at a rally. It is considerably less convincing as economic policy. A mature trading power should be capable of negotiating disputes without treating the grocery basket as a battlefield. America does not become stronger when it taxes its neighbours for failing to love its products. It merely makes the supermarket receipt another monument to wounded pride.

The tragedy is that rhetoric of strength can conceal misunderstanding of power. Real power builds alliances and makes products irresistible. It does not demand affection at checkout, then send the bill elsewhere.