Why Trump Keeps Using Tariffs – And Why the Whole World Pays Attention

21st July 2026

Why Trump Keeps Using Tariffs – And Why the Whole World Pays Attention.

Whenever President Donald Trump announces a new tariff, the headlines usually focus on the country involved.

China.

Canada.

Mexico.

The European Union.

But the effects rarely stop at national borders.

A tariff imposed in Washington can end up affecting factories in Germany, farmers in Canada, shipping companies in Singapore and even household budgets in Scotland.

That is why financial markets react so quickly whenever new tariffs are announced.

What Is a Tariff?

A tariff is simply a tax on imported goods.

If the United States imposes a 50% tariff on a product entering the country, the importer must pay that additional charge.

For example:

A shipment worth $100,000.
A 50% tariff.
The importer pays an additional $50,000.

That extra cost has to be absorbed somewhere.

It may be paid by:

The importing company.
The exporter through lower prices.
Retailers through reduced profit margins.
Consumers through higher prices.

Often, the cost is shared between all four.

Why Does Trump Like Tariffs?

Donald Trump has long argued that previous trade agreements allowed other countries to benefit at America's expense.

His view is that tariffs encourage companies to:

Manufacture more goods in the United States.
Buy from American suppliers.
Create American jobs.
Reduce trade deficits.

Unlike many previous presidents, Trump sees tariffs not simply as taxes but as negotiating tools.

If another country changes its policies, tariffs can be reduced or removed.

If it refuses, tariffs can be increased.

In effect, tariffs become economic leverage.

A Different Approach to Trade

For many decades, the United States generally promoted lower trade barriers through international agreements.

The Trump administration has taken a different approach.

Instead of relying primarily on lengthy negotiations, it has often imposed tariffs first and negotiated afterwards.

Supporters argue this gets faster results.

Critics say it creates uncertainty and damages confidence in global trade.

Why Does the Whole World Care?

Modern supply chains are global.

A car assembled in the United States might contain:

Steel from Canada.
Electronics from Japan.
Semiconductors from Taiwan.
Aluminium from Australia.
Components manufactured in Mexico.

If tariffs increase the cost of one component, the price of the finished vehicle can also rise.

The effects ripple through the entire supply chain.

Businesses Don't Like Uncertainty

Companies can usually adapt to higher costs.

What they struggle with is uncertainty.

If tariffs are announced, withdrawn, increased or expanded with little warning, businesses find it much harder to plan.

Should they:

Build a new factory?
Hire more workers?
Invest in new equipment?
Change suppliers?

Uncertainty often causes firms to delay investment until they know where they stand.

Could Tariffs Increase Inflation?

Yes.

If imported goods become more expensive, some of those costs are often passed on to consumers.

That can push inflation higher.

Central banks then face difficult decisions about interest rates.

In this way, tariffs can influence borrowing costs, mortgage payments and household budgets—even in countries not directly involved in the dispute.

What Does It Mean for Britain?

The UK may not be the target of a tariff, but it can still be affected.

British exporters may find their products becoming more or less competitive depending on how global trade flows change.

If Canadian goods face higher barriers entering the US, some exporters may look for new markets in Europe.

If American manufacturers face higher costs, UK firms may gain or lose business depending on the sector.

Financial markets also react quickly to trade disputes, affecting exchange rates, investment decisions and business confidence.

Scotland's Perspective

Scotland is a trading nation.

Its economy depends heavily on exports, including:

Whisky.
Seafood.
Engineering.
Food and drink.
Renewable energy technology.

Changes in global trade patterns therefore matter, even when Scotland is not directly involved.

Tariffs that alter shipping routes, commodity prices or exchange rates can eventually affect Scottish businesses.

Do Tariffs Work?

Economists remain divided.

Supporters argue tariffs:

Protect domestic industries.
Encourage local manufacturing.
Reduce dependence on imports.
Strengthen a country's negotiating position.

Critics argue they:

Increase prices.
Reduce competition.
Slow economic growth.
Invite retaliation from trading partners.

History suggests both sides have valid points.

Some industries benefit from protection.

Others suffer when export markets retaliate.

Consumers often face higher prices in the short term.

The Bigger Picture

Trump's latest tariffs are not isolated events.

They reflect a broader change in the way international trade is being conducted.

For much of the post-war period, governments sought to reduce barriers between countries.

Today, tariffs are increasingly being used as instruments of foreign policy, national security and economic strategy.

That means businesses can no longer think only about supply and demand.

They must also consider politics.

Looking Ahead

The latest tariffs on Canadian goods may yet be reduced or withdrawn if negotiations succeed.

Or they could trigger another round of retaliation and further escalation.

Either way, they underline an important lesson.

Trade policy is no longer a technical subject discussed only by economists.

It has become one of the world's most powerful political and economic tools.

Whether you are running a manufacturing business in Ohio, a whisky distillery in Speyside or a small engineering firm in Caithness, decisions taken in Washington can have consequences far beyond America's borders.

That is why every new tariff announcement now attracts global attention—and why it is likely to remain one of the defining features of international economic policy for years to come.