International Trade

Definition: Countries specialize in the production of goods for which they have a comparative advantage—meaning they can produce goods at a lower opportunity cost than other countries.

Each country operates within a PPF that indicates the maximum potential output combinations of two goods, food and clothing, that can be produced.

Example Scenario:
- Without specialization and trade (NS-NT case): Individuals only consume what they produce.
- With specialization and trade (S-T case): Countries specialize in goods with comparative advantages, leading to increased consumption possibilities and overall welfare improvements.
Production points before and after specialization:
- U.S. at Point B (60 Food, 10 Clothing) to Point A (90 Food, 0 Clothing) and Japan from Point F (10 Food, 0 Clothing) to Point H (5 Food, 10 Clothing).

U.S. can produce 120 units of X at an opportunity cost of 20 units of Y.
Great Britain: 40 units of X at 80 units of Y.
Terms of trade (favorable ranges): For the U.S. 1X = 1/6Y or 1Y = 6X; for Great Britain 1X = 2Y or 1Y = 1/2X.

Even if one country can produce more of all goods, it can still benefit from specializing based on comparative advantage, as illustrated in Exhibits 1 and 2.
Effectively, U.S. could gain an additional 10 units of food through specialization and trade, despite having higher output capacity.

The benefits from trade do not accrue equally; some individuals may benefit greatly while others may incur losses, leading to the rationale behind trade restrictions:
- Tariff: A tax imposed on imports.
- Quota: A legal limit on the quantity of a good that can be imported.

Consumers’ Surplus: The difference between the maximum price consumers are willing to pay and the actual price they pay, represented graphically as the area above the market price.
Producers’ Surplus: The difference between the actual price producers receive and the minimum price they would be willing to sell for, represented as the area below the selling price.

A tariff raises the price of goods (e.g., cars) from $PW to $PW + T (T represents tariff amount).
Consequentially:
- Decrease in consumer surplus
- Increase in producer surplus
- Generation of government revenue from tariffs
- Overall net loss combined from consumer losses versus producer gains and government revenue generation.

A quota can cause prices to escalate from the world market price to a regulated price (PQ), mirroring moves seen with tariffs regarding surplus and revenue.
Nevertheless, unlike tariffs, the revenue from quotas does not go to the government but rather to the importers who abide by the quota, thereby affecting market dynamics differently.

National Defense Argument: Certain industries must be maintained for national security reasons.
Infant Industry Argument: New domestic industries require protection until they reach maturity and can compete globally.
Antidumping Argument: Prevention of foreign competitors from undermining local markets by selling goods below production costs.
Low Foreign Wage Argument: Noting the disparity in wage standards between domestic and foreign production costs.
Saving-Domestic-Jobs Argument: Protecting jobs from being displaced by foreign competition.

The WTO has a global mandate to regulate international trade rules among nations, facilitating commerce by members signing and ratifying agreements.

Tariff Effects: Domestic producers benefit through increased surplus; consumers lose because of reduced surplus; the government gains revenue. The net loss is heavier on consumers compared to gains on the other sides.
Surplus Change Relationship: Movement from free trade to tariffs causes a larger decline in consumers’ surplus compared to the increase in producers’ surplus.
Key Differences: With tariffs, government generates revenue; quotas do not provide government revenue as those earnings go to the importers.
Infant-Industry Argument: Protection for nascent industries until competitive viability is achieved through tariffs or quotas.