Key Idea: A country's car factories are losing sales to cheaper imported cars. The workers ask the government to keep the imports out. If it does, those jobs are saved this year. But every family that buys a car pays more, and the country that made the cheap cars may block your exports in return. That is the whole topic. Every argument for protection names someone it helps: a new industry, a soldier, a farmer, the tax office. Every argument against names who quietly pays: consumers, exporters, and the country's own efficiency. Your job is to weigh the two for the case in front of you. Where you meet it:
Paper 1
- Essays. This is where the topic is asked.
- Explain [10]: two reasons a government protects its industries. The most common shape by far.
- Discuss or Evaluate [15]: whether a country should impose protection, with the tariff diagram from 4.2.
Paper 2
- Data response.
- A text describes a country putting on, or removing, a tariff. Explain a reason from this topic, then draw the 4.2 diagram.
Every later trade unit
- The same arguments come back.
- In 4.6 protection is one way to cut a current account deficit. In development, rich-country protection is a barrier poorer countries face.
🌱 The infant industry argument
A new industry has small factories and high costs. The foreign firms it competes with are old, large and cheap. On its own it would be beaten before it grew. So the government shields it for a while, and removes the shield once it can compete.
How the argument is supposed to work
- The new industry cannot compete — Its factories are small, so each unit costs more than a rival's. Buyers pick the cheaper import, and the new firm never gets the sales it needs to grow.
- The government shields it — A tariff on the imports, or a subsidy to the new firm. Now the domestic product can sell, and the firm has time to learn.
- It grows and its costs fall — Bigger factories and practice bring economies of scale. South Korea shielded its car makers from the 1960s; Hyundai now sells worldwide without help.
- The shield comes off — Once the industry can match foreign prices the protection should end. If it does not, the argument has failed and the country is left with an expensive, protected industry.
Too small to compete → shield it → it grows and learns → remove the shield
Important: The argument only works if the protection ends. Two things go wrong in practice: the government cannot tell which new industries will ever compete, so it may protect the wrong one. And a protected industry lobbies to keep its tariff long after it has grown up. So whenever you use this argument, write the condition: provided the protection is removed once the industry can compete.
🛡️ The other reasons governments give
Each of these is a real reason a government has used. Each also has a standard weakness, and a good answer gives both. Learn the argument with its example, because a named case turns a claim into an explanation.
| Argument | What it says | Real example | Its weakness |
|---|---|---|---|
| National security | steel, energy and food should not depend on a country that could cut you off | the US put a 25% tariff on imported steel in 2018 and gave national security as the reason | almost any industry can call itself vital, so the argument stretches |
| Protecting jobs | cheap imports close factories, so block them to keep the workers employed | the US taxed Chinese tyres from 2009 to 2012 to keep tyre-factory jobs | consumers pay more, and workers stay in an industry the country is bad at |
| Government revenue | a tariff is a tax, and it is easy to collect at the border | in some of the poorest countries customs duties bring in a large share of all tax | it fades as the country builds an income tax and a sales tax |
| Anti-dumping and unfair competition | a foreign firm sells below cost, or with its own government's subsidy, to drive local firms out | the EU put duties on Chinese solar panels in 2013 after finding they were sold below cost | dumping is hard to prove, so the label is used to cover ordinary protection |
| Health, safety and environmental standards | keep out goods made in ways that harm people or the environment | the EU bans beef from cattle given growth hormones | hard to check, so it can be a disguised trade barrier |
| Balance of payments | cut imports to shrink a current account deficit | Argentina made importers apply for licences in 2012 to cut its import bill | invites retaliation, and only treats the symptom for a short time |
| Strategic industries and diversification | protect industries with big spillovers, or so the economy does not depend on one export | the US CHIPS Act of 2022 subsidises chip makers; Nigeria shut its land borders in 2019 partly to grow its own rice | the government is guessing which industries the future needs |
The strongest arguments in the eyes of most economists are infant industry and anti-dumping, because both describe a market that is not working properly. The weakest is protecting jobs, because it keeps workers where the country has no comparative advantage. Anti-dumping duties are allowed under WTO rules. That is a fact most answers do not have.
📉 The case against: who quietly pays
Protection helps one group you can see, and costs several groups you cannot. Most economists think the costs are bigger. The table follows each cost to the person who pays it.
| Cost of protection | Who pays, and how | Real example |
|---|---|---|
| Higher prices and less choice | every consumer pays more for the import and for the local product that no longer has to compete | US tariffs on washing machines in 2018 raised their price by about 12%; each job saved cost consumers roughly $800,000 |
| Misallocation of resources | land, workers and capital stay in an industry where the country is not the cheapest producer, instead of moving to one where it is | US sugar quotas keep farmland in sugar; US sugar costs about twice the world price |
| Complacency | the sheltered firm has no rival to beat, so it stops cutting costs and improving | behind high tariffs, India's Hindustan Ambassador car was sold almost unchanged for decades |
| Retaliation | the trading partner taxes your exports back, so your exporters lose sales | when the US taxed Chinese goods in 2018, China taxed US soybeans and US farmers lost their biggest buyer |
| Harm to your own exporters | a tariff on an imported input raises costs for every firm that uses it, so its exports get less competitive | the 2018 US steel tariff raised costs for US car and machinery makers; more jobs were lost in steel-using firms than saved in steel |
| Rent-seeking | firms spend money lobbying for protection instead of on better products | an industry with a tariff to defend hires lobbyists, not engineers |
The gain from a tariff goes to a few firms and their workers, who notice it and fight for it. The loss is spread over millions of consumers, a few euros each, so nobody protests. That is why protection persists even when the total loss is bigger than the total gain. It is a strong closing line in a 15-mark answer.
🌍 Rich-country protection and the WTO
Protection by rich countries hits poorer countries hardest, because the goods poorer countries can export, such as farm produce and textiles, face the highest barriers. The clearest case is tariff escalation: a low tariff on the raw material and a high one on the finished product.
Raw cocoa beans
- Ghana exports the beans to the EU at a 0% tariff. The EU wants the raw material cheap.
Chocolate
- Chocolate made in Ghana faces an EU tariff of 30% or more. So Ghanaian chocolate cannot compete in Europe.
The result
- Ghana keeps exporting the cheap bean and never builds the chocolate industry, where the value is added. The rich country keeps the processing jobs.
The WTO
- Sets the rules of trade, treats all members equally, and settles disputes. But the Doha Round stalled over farm protection, and powerful countries can ignore rulings.
It sets rules: most-favoured nation (treat every member the same) and national treatment (treat foreign goods like local goods once they are in). It settles disputes. It negotiates cuts in barriers. What it cannot do is force a large country to obey. Farm subsidies in the EU and US are still there because rich countries would not give them up.
⚖️ How to weigh it
Every 15-mark question in this topic asks you to decide. Listing arguments for and against is the middle of the answer, not the end. Use these four questions to reach a verdict for the case in the question.
Protection is more defensible when: the industry is **genuinely new** and the protection has an **end date**. there is real **dumping** or a foreign subsidy, so the market is not fair to begin with. the industry is **vital to security** in a narrow sense: food, energy, defence. the country is poor and the tariff is a **major source of tax** it cannot yet replace.
Protection is weaker when: the aim is to **save jobs** in an industry the country will never be cheapest at. a **subsidy or retraining** would reach the same aim without raising prices for everyone. the trading partner is large and **likely to retaliate**. the protected good is an **input** for your own exporters.
Important: Say which argument the country is using, say whether the conditions hold (temporary, targeted, a real market problem), name who pays, and ask whether a different tool would do the job with less damage. Then decide. It depends is only an answer once you have said what it depends on.
✍️ Worked examples
This topic is asked as essays: an Explain [10] on the reasons for protection, and a Discuss or Evaluate [15] on whether to use it. Try each before opening the plan.
Using real-world examples, explain two reasons why a government might impose trade protection on imported food.
Model answer plan
See the mark-by-mark plan — for / against / judgement, with marking guidance — in study mode.
Now the short question on why a country removes protection.
In 2023 a country removed the tariff it had charged on imported cooking oil for twelve years. Explain two possible reasons for removing the tariff.
Model answer plan
See the mark-by-mark plan — for / against / judgement, with marking guidance — in study mode.
Now the 15-mark verdict on a developing country.
Using real-world examples, discuss whether a developing country should use tariffs to raise government revenue and to build up new industries.
Model answer plan
See the mark-by-mark plan — for / against / judgement, with marking guidance — in study mode.
And the shape that tests whether you can say when the costs win.
Using real-world examples, evaluate the view that the costs of trade protection always outweigh its benefits.
Model answer plan
See the mark-by-mark plan — for / against / judgement, with marking guidance — in study mode.
✅ Quick self-check
Tap each card to check yourself.
State the infant industry argument, with its condition. A new domestic industry has small factories and high costs, so it cannot yet match established foreign firms. Temporary protection lets it grow until it can compete. The condition is that the protection is removed once it can.
Define dumping. A foreign firm selling its exports below the cost of production, often to drive out local competitors. Duties against it are allowed under WTO rules, but dumping is hard to prove.
Why do economists call protecting jobs the weakest argument? It keeps workers in an industry where the country has no comparative advantage, every consumer pays more, and each job saved costs far more than the wage. The US washing-machine tariff cost about $800,000 per job.
Who pays for a tariff? Consumers, through higher prices and less choice. Their loss is bigger than the gain to producers and the government, and the gap is the welfare loss shown by the two triangles on the tariff diagram.
What is retaliation, and why does it matter? The trading partner taxes your exports in return, so your exporters lose sales. When the US taxed Chinese goods in 2018, China taxed US soybeans and US farmers lost their biggest buyer.
Why can a tariff on steel hurt a country's own exporters? Steel is an input. Car and machinery makers pay more for it, so their products cost more abroad and they lose competitiveness. In 2018 more US jobs were lost in steel-using firms than saved in steel.
What is tariff escalation? A low tariff on the raw material and a high tariff on the processed good. The EU charges 0% on cocoa beans and 30% or more on chocolate, so Ghana exports beans and cannot build a chocolate industry.
Why does protection persist if its costs are bigger than its gains? Concentrated gains, dispersed losses. A few firms and workers gain a lot and lobby for it. Millions of consumers each lose a little and do not notice. Rent-seeking is the name for that lobbying.
Exam tips
- For every argument, give an industry and a country. A named example turns a generic claim into an explanation.
- Write the infant industry condition every time: provided the protection is removed once the industry can compete. The condition is the evaluation.
- Anti-dumping duties are allowed under WTO rules. Say so; most answers do not.
- In a 15-mark answer, draw the tariff diagram from 4.2 and name who gains and who loses. The welfare-loss triangles are the case against protection in one picture.
- Retaliation is the cost most answers forget. Protection costs the country its export markets too.
- When the question says always or should, find the case where the word breaks: real dumping, a new industry with an end date, a narrow security need.
- Close with concentrated gains, dispersed losses. It explains why protection persists even when it costs more than it saves.