Another Day, Another Tarif
History shows that tariffs are rarely just about trade. From the protectionism of the 1930s to the U.S.–Japan trade disputes of the 1980s, governments have long used tariffs to protect domestic industries, pressure competitors and advance their broader economic and strategic interests. What is different today is the extent to which trade has become intertwined with national security, industrial policy and geopolitical competition.
In September, the latest development was not yet a new tariff taking effect, but reports that the US administration was preparing an additional 7.5% tariff on Chinese imports. The proposed measure targets what Washington described as China's excess manufacturing capacity and underpriced exports. It was that the timing also mattered, with the move reportedly being considered ahead of the Trump–Xi Jinping summit, suggesting an attempt to increase pressure on Beijing without completely derailing the existing trade truce.
The bigger picture goes beyond China.
The United States is increasingly using tariffs not simply to address trade imbalances, but to influence where goods are produced, how supply chains are structured and how much economic leverage Washington retains over its trading partners. From this perspective, tariffs are as much a tool of strategic competition as they are an instrument of trade policy.
China, however, rejects Washington's accusations of industrial overcapacity and has criticised the tariffs as unilateral and discriminatory. The disagreement reflects a broader contest over global manufacturing, market access and the role governments should play in supporting domestic industries.
There is also an important parallel with Canada. Washington is putting pressure on two of its most significant trading partners, albeit in very different economic circumstances. Canada remains deeply integrated into North American supply chains, while China is central to global manufacturing. Both have strong incentives to explore alternative markets, diversify trade relationships and reduce their exposure to unpredictable U.S. trade policy.
This is where the longer-term implications become important. Tariffs can create short-term negotiating leverage and offer protection to selected industries. But they can also increase costs, disrupt established commercial relationships and encourage businesses to seek alternative suppliers and markets. Over time, measures intended to strengthen America's position could accelerate efforts by trading partners to reduce their dependence on it.
That does not mean the United States will lose its economic influence overnight. Its market remains significant, and building alternative supply chains takes time. But repeated trade disputes can change business decisions, investment patterns and international partnerships in ways that outlast the tariffs themselves.
The historical lesson is that tariffs can deliver immediate pressure while creating longer-term strategic consequences. The question is not just how much it costs to trade with the United States today, but whether its trading partners will increasingly look elsewhere tomorrow.
Another day, another tariff. But the bigger story is what happens when economic leverage becomes a recurring feature of international trade: countries begin planning not only around access to the American market, but also around the possibility that they may one day need alternatives to it.