4th November 2026
Donald Trump's trade policy was built around a simple promise: make foreign countries pay more to sell goods in America, encourage companies to manufacture at home and protect American jobs.
But more than a year into the trade dispute, the economic consequences are becoming increasingly complicated. American businesses are facing higher costs, consumers are exposed to more expensive goods, and some of the country's closest trading partners are looking for alternative markets.
Britain, Canada and the European Union are all affected, although the impact varies considerably between countries and industries.
The question is whether Trump's tariffs are achieving their stated objectives or whether the costs are becoming greater than the benefits.
What has happened to the tariffs?
Trump's original tariff programme introduced additional charges on imports from a wide range of countries. The administration argued that tariffs would encourage companies to move production to America, protect domestic industries and improve the country's trading position.
However, the legal position has changed.
In February 2026, the US Supreme Court ruled that the International Emergency Economic Powers Act did not give the President authority to impose the broad tariffs introduced under that legislation. The administration subsequently used other legal powers to introduce replacement measures, but a temporary 10% global tariff expired in July.
That does not mean the United States has returned to normal trading arrangements. Sector-specific tariffs, including those affecting steel, aluminium and other products, remain in place. Further investigations could also lead to new trade restrictions.
The result is a complicated and uncertain system in which the tariff applying to a particular product can depend on its country of origin, its industry and the legal basis used by the American government.
Who actually pays the tariff?
One of Trump's arguments has been that foreign countries pay the price of tariffs. But that is not how the system works.
When a British company exports machinery to America and a tariff applies, the American importer is normally responsible for paying the duty to the US government.
The importer then has to decide what to do. It can accept a lower profit, negotiate a lower price with its British supplier or pass the additional cost on to American customers.
In reality, the burden can be shared between exporters, importers and consumers.
This is important because American manufacturers also import components, raw materials and machinery. A tariff on those imports can make it more expensive to manufacture products in the United States.
Research from the Peterson Institute for International Economics has examined who bears the cost of tariffs and found that American businesses can be harmed through higher prices for imported components and materials.
A tariff designed to protect one American industry can therefore increase costs for another.
American consumers face higher prices
The consequences can reach almost every household.
Imported food and ingredients, clothing, electronics, household appliances, furniture and building materials can all be affected.
Even products made in America may contain imported parts. Cars are a good example. A vehicle assembled in the United States may contain components manufactured in Canada, Mexico, Europe or Asia.
If those components become more expensive, the final vehicle can become more expensive too.
The same applies to construction. Tariffs on steel and aluminium can increase the cost of infrastructure, factories, commercial buildings and housing.
American consumers may not see a separate tariff charge on their shopping receipts, but they can still end up paying more.
There is a further risk. If businesses repeatedly pass on higher costs, tariffs can contribute to inflation. That could make it more difficult for the Federal Reserve to reduce interest rates.
Canada: A trading relationship under pressure
Canada is particularly exposed because its economy is closely connected to that of the United States.
Cars and components, steel, aluminium, timber, agricultural products and energy regularly cross the border. Production in some industries depends on materials and components moving between the two countries several times before a finished product reaches a customer.
Trump's tariffs have placed considerable strain on that relationship.
In August 2026, Canada announced retaliatory tariffs covering approximately C$27.6 billion of American goods after Washington imposed additional 50% tariffs on some Canadian imports. The Canadian measures covered hundreds of products, including electronics, appliances, clothing, food and other goods.
Canada also announced financial support for businesses and workers affected by the dispute.
The problem is that retaliation can create another round of costs. Canadian consumers may pay more for American products, while American producers can lose customers in Canada.
There is also a longer-term consequence. Canadian businesses may decide to develop more trade with Europe and other markets rather than remain so dependent on the United States.
That is already part of the thinking behind Prime Minister Mark Carney's efforts to diversify Canada's economic relationships.
Britain: Some protection, but plenty of uncertainty
Britain has negotiated arrangements with the United States which give some industries more favourable treatment than they might otherwise receive.
The UK-US Economic Prosperity Deal included provisions for British car exports, aerospace products and other sectors. A separate pharmaceutical arrangement also provided important tariff exemptions.
However, British steel and aluminium producers have faced additional duties, while other industries remain exposed to changing American trade rules.
The UK House of Commons Library has highlighted the uncertainty created by the changing legal basis of US tariffs and the difficulty of knowing how individual trade agreements will be affected.
For British businesses, the problem is not just the tariff currently being charged. It is the possibility that the rules could change again.
A company considering a new factory, export contract or major investment needs to know what its products will cost to sell in America over several years. Constant changes make that planning much more difficult.
Europe and the wider world
The effects extend well beyond Britain and Canada.
European manufacturers, particularly those exporting cars, machinery, chemicals and industrial products, have been affected by the American approach.
Asian economies also have considerable exposure to the US market. China, Japan, South Korea and several Southeast Asian countries have been forced to consider how to respond to the changing trade environment.
There is a risk that goods which become more difficult to sell in America will be redirected towards other markets, including Europe and Britain.
That could create opportunities for consumers through lower prices, but it could also put additional pressure on domestic manufacturers.
The uncertainty is itself an economic cost. Businesses may delay investment, reconsider supply chains or look for new markets because they cannot be confident that today's trading arrangements will still exist next year.
A recent analysis by RSM, published on 3 November 2026, argues that the American trade strategy has not reduced the overall trade deficit and that higher import costs have contributed to inflationary pressure. It also points to trading partners diversifying away from the United States.
These are important developments for a country that has traditionally been at the centre of global trade.
Can the Democrats change things?
The Democrats' victory in the midterm elections gives them control of both chambers of Congress. They can now investigate the effects of tariffs, question officials, examine the costs to American businesses and introduce legislation to change trade policy.
But Trump remains President and can veto legislation. Congress also faces the complication that the administration has several different legal routes available for imposing tariffs.
The Democrats may be able to press for exemptions, challenge particular measures and build support for a different approach. A complete reversal while Trump remains in the White House is much more difficult.
Protection or a more expensive world?
There is a legitimate argument for protecting industries which are important to national security and ensuring that businesses are not undermined by unfair trading practices.
But tariffs are a blunt instrument. They can protect one manufacturer while increasing costs for another. They can encourage domestic production, but they can also make the materials and components needed for that production more expensive.
For Britain, the concern is that American trade policy could become increasingly unpredictable. For Canada, the danger is that a close and mutually beneficial trading relationship becomes more difficult to maintain. For American households, the concern is that the cost of protecting domestic industries may appear in higher prices.
International trade depends on trust, reliable agreements and the ability of businesses to plan ahead.
If governments increasingly treat tariffs as a negotiating weapon, the result may be a world in which companies spend more time managing trade disputes and less time investing, producing and creating jobs.
Trump promised that tariffs would make America stronger. Whether they ultimately achieve that remains an open question. What is already clear is that their consequences do not stop at the American border.