International Trade and Protectionism

This is Unit Seventeen of Principles of Macroeconomics, part two of two: international trade and protectionism. Part one asked why countries trade and what they gain. This part builds the model of protection and takes up the arguments for it. Carry one idea through. Protection is almost always argued for as a way of saving jobs, and the model says it moves them rather than adding to them, at a cost that has run several times the wage of the job preserved. The closing entry makes the strongest case in the unit by removing trade from the question entirely — and then refuses the easy conclusion, because the losses protection is asked to answer are real. By the end you will find the free-trade price and the quantity traded, work a quota below that flow, name which of the five arguments a case is and give its counter, say what protection does to total employment, and say why trade disruption sits in the same category as every other disruptive change.

Three entries on the model behind all of this, and on what a quota does inside it.

Two countries, one good.

MAC 1616 The Two-Country Trade Model

Put one good and two countries side by side, each with its own demand and supply. Before trade each sits at its own equilibrium, one low and one high. With trade, a single price clears both markets, so the low-price country's price rises and the high-price country's falls. At that price the exporter's excess supply equals the importer's excess demand.

Finding that price.

MAC 1617 The Free-Trade Price and Flow

From two countries' domestic schedules, find each autarky price, then the single free-trade price and the quantity traded. The free-trade price is the one at which one country's excess demand equals the other's excess supply, and that common quantity is the trade flow. In the importing country, quantity demanded equals quantity supplied at a price of sixty, so sixty is its autarky price. In the exporting country the two are equal at twenty. Now test forty. In the importer, quantity demanded is a hundred and quantity supplied is forty, so excess demand is sixty. In the exporter, quantity supplied is ninety and quantity demanded is thirty, so excess supply is sixty. The two match, so forty is the free-trade price and sixty units are traded. The importer's price fell from sixty to forty; the exporter's rose from twenty to forty. Both prices moved, which students often miss by thinking only about the importing country. The exporting country's consumers now pay forty for a good that cost them twenty before trade, and they are worse off, while its producers are better off. Every trade flow has a losing side in both countries.

Restricting the flow.

MAC 1618 A Quota Smaller Than the Flow

Impose a quota below the free-trade quantity and find the resulting price in both countries. The quota forces the two markets apart again, so each returns partway toward its own autarky price: find the importer's price where its excess demand equals the quota, and the exporter's where its excess supply equals the quota. The free-trade flow was sixty units at a price of forty in both countries. Now cap imports at thirty. In the importing country, excess demand falls to thirty at a price of fifty, where quantity demanded is eighty-five and quantity supplied is fifty-five. In the exporting country, excess supply falls to thirty at a price of thirty, where quantity supplied is seventy and quantity demanded is forty. So the importer's price rises to fifty and the exporter's falls to thirty, and the twenty-point gap between them is exactly what the quota created. Now look at who gained. The importing country's consumers pay more and its producers gain. But the exporting country's producers now receive fifty rather than forty on the units they are still allowed to ship, so part of the importing consumers' loss ends up with foreign producers rather than with the domestic ones the quota was meant to help. A tariff would at least have collected that as revenue.

Four entries on who gains inside each country, what protection transfers, and what it does to jobs.

Winners and losers.

MAC 1619 Who Gains and Who Loses

Trade creates winners and losers inside both countries. In the exporting country producers gain and consumers lose. In the importing country consumers gain and producers lose. Total gains exceed total losses in both, so both countries are better off overall while both contain people who are worse off. That combination is the entire political economy of trade policy in one sentence.

What protection transfers.

MAC 1620 Protection Works Like a Subsidy

Protection raises the domestic price, so consumers pay more and domestic producers receive more. It works like a subsidy from consumers to producers, collected through prices rather than through taxes. Consumers lose more than producers gain, so the total falls. The anchor concedes this is not really disputed: if protection did not raise producers' receipts, nobody would seek it.

What it does to jobs.

MAC 1621 Protection Reshuffles Jobs

Protection moves jobs from unprotected industries to protected ones; it does not raise the total. Consumers paying more have less to spend elsewhere, and firms using the protected good as an input lose sales to competitors paying less. Total employment tracks the business cycle, not the trade share. That second channel surprises people, and the capstone works a case of it.

What the reshuffling costs.

MAC 1622 The Cost per Job Saved

Across studied industries, the consumer cost of preserving one job by protection has run far above the wage of the job preserved, often several times over. Only part of the higher price preserves employment; the rest becomes profit, equipment and efficiency loss. The compilations behind this are dated, so the pattern is voiced here and the amounts are not.

Two entries on what trade does to pay, and on the objection that is hardest to answer well.

What trade does to pay.

MAC 1623 Trade and Wages

Two things are true at once. Trade raises productivity, which raises labour demand and the average wage. And it shifts the distribution, lowering demand in import-competing industries and raising it in exporting ones. Stating only one of the two is how this argument usually goes wrong. The witness says trade does not affect real wages at all; the course follows the anchor, because both halves are needed.

Two questions, argued as one.

MAC 1624 Labour Standards

Two questions get argued as one. Child labour, forced labour and abuse of workers are near-universally rejected. Wages and hours far below rich-country norms, where the worker's realistic alternatives are worse, is a different question. The useful question is what enforceable minimum standards should hold everywhere, and that differs from whether to restrict trade. The course reaches no verdict.

Four entries on the five arguments for restricting imports, and on sorting a case among them.

The first argument.

MAC 1625 Infant Industry

Protect a new industry temporarily while it builds skills, management and scale, then let it compete. The premise is sound, because part one showed that advantage built from learning can be created. In practice industries often pass from infancy to obsolescence, and temporary protection proves durable. Three conditions make it defensible: target few industries, spare inputs others depend on, and fix the end date in advance.

The second and third.

MAC 1626 Anti-Dumping and the Environment

Dumping means selling below the cost of production, and anti-dumping tariffs raise the price to that cost. But prices are set by supply and demand rather than by cost, so a price can fall below cost unintentionally. A second argument says firms relocate to weak-standard countries. Compliance runs at one or two percent of plant costs, so that relocation is not what the evidence shows.

The last two.

MAC 1627 Consumer Safety and National Interest

Countries may set their own safety standards, provided they are scientific and apply equally to domestic and imported goods. The national-interest argument opposes depending on imports of a critical product. If the fear is a future cutoff, importing now and conserving domestic reserves answers it better. What counts as strategic is decided politically, so almost anything qualifies.

Sorting the five.

MAC 1628 Classify the Argument, Give the Counter

From a case for restricting imports, name which of the five arguments it is and give the standard counter. A new industry needs shelter until it reaches efficient scale: infant industry, countered by the fact that protection rarely ends and other instruments do not tax its own customers. A foreign producer sells below cost: anti-dumping, countered by the fact that a market economy guarantees no producer a profit and cost is hard to compute. Production will move where environmental rules are weaker: the race to the bottom, countered by evidence that compliance is a small share of costs and the relocation does not happen. Imported goods may be unsafe: consumer safety, countered by the rule that standards are allowed if scientific and non-discriminatory. A country should not depend on imports of a critical material: national interest, countered by stockpiling and conservation, which address the fear directly. Two of the five are weak on the economics and strong in practice. Anti-dumping is theoretically shaky and heavily used: a complaint, a negotiated reduction in imports, and the complaint dropped. The national-interest argument is defensible in principle and captured in practice — a material declared strategic in the fifties, delisted in nineteen sixty, and still subsidised four decades later.

One entry on the question every one of those arguments comes back to.

Does it save jobs.

MAC 1629 Does Protection Save Jobs

Here the unit's governing idea pays off. Protection is almost always argued for as a way of saving jobs, and the honest answer is that it moves them and costs a great deal to do it. The protected industry does keep employment it would otherwise lose, and that is real and not to be dismissed. But the money to pay for it comes from two places. Consumers paying a higher price for the protected good have less to spend on everything else, so employment falls in the industries they would otherwise have bought from. And firms that use the protected good as an input now pay more for it than their foreign competitors do, so they lose sales, and their employment falls too. Neither shows up in the debate, because the jobs preserved are identifiable and concentrated while the jobs lost are scattered across industries that never knew they were in the argument. Take the anchor's own case, because nothing invented would be as clean. A domestic industry making flat-panel displays filed a dumping complaint, and a duty of sixty-three percent was imposed on imported displays. Displays were as much as half the cost of building a laptop computer, so the protection raised the cost of assembling laptops in that country by a large fraction. One computer maker moved its manufacturing abroad. A second shut its domestic laptop plant. A third cancelled a planned domestic plant and expanded overseas instead. The protection did not move production toward the country; it drove the assembly out, and the display production followed it. Three cautions. First, the cost per job preserved, where it has been measured, runs far above the wage of the job, and the anchor's own gloss is that the workers could have been paid a full salary to stay at home for about half the cost — which is not a proposal but a measure of how much is being spent. Second, this argument is about employment totals and says nothing about the people in the protected industry, whose losses are real, concentrated, and a legitimate object of policy; what it says is that protection is an expensive and leaky instrument for helping them. Third, this rests on the anchor alone, and the case above is a single documented episode, which illustrates a mechanism rather than proving its general size.

One entry to close the unit, which puts the whole objection differently.

Removing trade from the question.

MAC 1630 The Technotron Argument

The best argument in this unit is a thought experiment, and it works by removing trade from the question entirely. Suppose a domestic firm invents a technology that lets it make a better product at lower cost with fewer workers. Its rivals lose money, lay off workers, and some fail. Ask whether the law should forbid the technology. Almost nobody says yes. The answers people offer instead are support for the displaced workers, retraining, and research help so that rivals can catch up. Now change one thing: the firm's advantage is not an invention but that it buys what it sells from abroad. The objective situation is identical — same better product, same lower cost, same rivals losing money, same workers laid off — and yet the policy response usually proposed is completely different. If the response should differ, there must be some difference between the two cases, and it is not obvious what it is. Take the parallel cases. Nobody proposes giving up electric light to protect the people who made candles, though that industry was destroyed. Nobody proposes holding back a medicine to protect the sellers of whatever it replaces. In both, the disruption is accepted and the argument moves to how the displaced are helped. The general category is disruptive market change, and it is deliberately broad: a rival with better management, a workforce that becomes more productive, a tough domestic competitor, a product that fails in the market, or plain luck. Every one of those destroys jobs in some firms and creates them in others, and none attracts a proposal to outlaw the source. Trade disruption sits in that category rather than in a category of its own. Three cautions, and the first is the one the anchor itself insists on. The argument for trade does not rest on denying that trade is disruptive, or that the disruption falls unevenly, or that the losses are real. It rests on the narrower claim that protection is the wrong instrument for those losses, and that income support, retraining and research address them at far lower cost. Second, the anchor is honest about a limit of its own analysis: when it introduces the offsetting-spending argument it stops to say that a factory disaster killing workers is a complication its simplified treatment does not capture, and the course repeats that admission rather than tidying it away. Third, the average person who gains from trade is a construct, covering people who did very well, people who did all right, and people who did badly, and a policy interest in the third group is entirely legitimate.

Look at what you can now do. You can find the free-trade price and the quantity traded, and say why both countries' prices move rather than only the importer's. You can work a quota below the free-trade flow, and say why part of the importing consumers' loss ends up with foreign producers rather than the domestic ones it was meant to help. You can name which of the five arguments a case is and give its counter, and separate the ones weak on the economics from the ones strong in practice. You can say what protection does to total employment — that it moves jobs rather than adding them, through two channels nobody counts. And you can say why trade disruption belongs in the same category as every other disruptive change, without pretending the losses are not real. Unit eighteen is the capstone, and it makes the whole course usable under exam conditions.