Free Trade Increases Total Surplus


First watch this video Imports, Exports, and Exchange Rates:

https://www.youtube.com/watch?v=geoe-6NBy10

The U.S.A. should unilaterally end all import restrictions.

This might seem radical but this is a widely held and promoted stance among libertarians including those at the Cato Institute.

Consumer surplus is the price a person is willing to pay in excess of what they actually pay.

Producer surplus is the price a producer sells its product for in excess of the cost of production.

Total surplus = consumer surplus + producer surplus = total economic gain.

For an economy maximizing total surplus is the goal, and it doesn’t matter if consumer surplus or producer surplus is bigger.

In Figure 1:

Before country “Hereland” opens up to allow imports, Product X is only supplied to consumers in Hereland by producers located in Hereland:

· price of X is $10

· quantity supplied of X is 20 units

· consumer surplus is area A

· producer surplus is areas B + C

Hereland is adhering to a strict “Buy Hereland” policy, no imports allowed.

Economists in Hereland convince the politicians to begin allowing imports of product X from other country “Thereland.”

Thereland producers have lower costs and are able to supply X at price of $6.

When imports are allowed price of X in Hereland drops from $10 to $6.

Total quantity supplied of X in Hereland increases to 30 units, 10 supplied by Hereland producers and 20 supplied by Thereland producers

Only the most efficient, lowest cost producers in Hereland continue to make and supply Product X.

Hereland consumer surplus becomes areas  A + B + D.

Hereland producer surplus becomes area C.

Total surplus = total economic gain in Hereland has increased by area D, now is A+B+C+D, before was only A+B+C.

Notice free trade has the same effects as starting use of new production technologies in the importing country.

Both free trade and new production technologies result in greater supply, lower prices, and loss of current jobs.

Regardless of whether Thereland allows imports of some other Product Y from Hereland, the residents of Hereland are better off.

Therefore, it is better for Hereland and all countries to end restrictions on imports, even if done unilaterally starting with the “Hereland” of the USA.

The huge increase in USA living standards would force all other countries to soon start the same unrestricted imports policy.

The Figure 1 example is for only one of thousands of products.

Product X jobs lost are made up with jobs producing other and new products: jobs creating toys subtracted, jobs creating software added.

Although the USA may have an overall trade deficit, more imports than exports, the USA and all countries always have an overall balance of payments which includes investments.

We don’t care about trade deficits and surpluses among current U.S. states and we also should not care about among all countries.

Some worry China is gaining control of the U.S. economy by using money from trade surpluses with the U.S. to invest in U.S. production and financial assets.

This is not a concern for many reasons, including

-total foreign investment including by China businesses is only about three percent of the U.S. GDP

-almost all employees including managers of foreign-owned firms are U.S. citizens

In the worst case, the U.S. government could nationalize (take over) foreign assets located in the U.S.

From article: Globalization Isn't Killing Factory Jobs, by Daniel Griswold

“According to a recent study by the Center for Business and Economic Research at Ball State University in manufacturing from 2000 to 2010, of the 5.6 million disappeared jobs in manufacturing:

-USA productivity growth caused 85% of the job losses

-imports accounted 13%”

We don’t restrict development of production technologies and we shouldn’t restrict imports.

… …

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