ECON 3601 Lecture Notes - Lecture 9: North American Free Trade Agreement, Median Voter Theorem, Economic Surplus

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The Cases for Free Trade
The first case for free trade is the argument that producers and consumers allocate
resources most efficiently when governments do not distort market prices through
trade policy.
National welfare of a small country is highest with free trade.
With restricted trade, consumers pay higher prices and consume too little while
firms produce too much.
However, because tariff rates are already low for most countries, the estimated benefits
of moving to free trade are only a small fraction of national income for most countries.
For the world as a whole, protection costs less than 1 percent of GDP.
The gains from free trade are somewhat smaller for advanced economies such as
the United States and Europe and somewhat larger for poorer developing
countries.
Free trade allows firms or industry to take advantage of economies of scale.
Protected markets limit gains from external economies of scale by inhibiting the
concentration of industries:
Too many firms to enter the protected industry.
The scale of production of each firm becomes inefficient.
Free trade provides competition and opportunities for innovation (dynamic benefits).
By providing entrepreneurs with an incentive to seek new ways to export or compete
with imports, free trade offers more opportunities for learning and innovation.
Free trade avoids the loss of resources through rent seeking.
Spend time and other resources seeking quota rights and the profit that they will
earn.
The political argument for free trade says that free trade is the best feasible political
policy, even though there may be better policies in principle.
Any policy that deviates from free trade would be quickly manipulated by
political groups, leading to decreased national welfare.
The Cases against Free Trade
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For a “large” country, a tariff lowers the price of imports in world markets and generates
a terms of trade gain.
This benefit may exceed the losses caused by distortions in production and
consumption.
A small tariff will lead to an increase in national welfare for a large country.
But at some tariff rate, the national welfare will begin to decrease as the
economic efficiency loss exceeds the terms of trade gain.
A tariff rate that completely prohibits imports leaves a country worse off, but tariff rate
tO may exist that maximizes national welfare: an optimum tariff.
An export tax (a negative export subsidy) that completely prohibits exports leaves a
country worse off, but an export tax rate may exist that maximizes national welfare
through the terms of trade.
An export subsidy lowers the terms of trade for a large country; an export tax
raises the terms of trade for a large country.
An export tax may raise the price of exports in the world market, increasing the
terms of trade.
Counter-Argument
For some countries like the U.S., an import tariff and/or export tax could improve
national welfare at the expense of other countries.
But this argument ignores the likelihood that other countries may retaliate against large
countries by enacting their own trade restrictions.
A second argument against free trade is that domestic market failures may exist that
cause free trade to be a suboptimal policy.
The economic efficiency loss calculations using consumer and producer surplus
assume that markets function well.
Types of market failures include
Persistently high underemployment of workers
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Document Summary

The first case for free trade is the argument that producers and consumers allocate resources most efficiently when governments do not distort market prices through trade policy. National welfare of a small country is highest with free trade. For the world as a whole, protection costs less than 1 percent of gdp. The gains from free trade are somewhat smaller for advanced economies such as the united states and europe and somewhat larger for poorer developing countries. Free trade allows firms or industry to take advantage of economies of scale. Protected markets limit gains from external economies of scale by inhibiting the concentration of industries: Too many firms to enter the protected industry. The scale of production of each firm becomes inefficient. Free trade provides competition and opportunities for innovation (dynamic benefits). By providing entrepreneurs with an incentive to seek new ways to export or compete with imports, free trade offers more opportunities for learning and innovation.

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