Predictions which restricting international trade to protect specific industries and “infant” firms would (a) inefficiently decrease aggregate output and employment, (b) raise the market power of the protected firms and their workers, and (c) increase consumer prices for the goods we would usually import, suggest that international trade: (1) is strictly a microeconomic problem which affects certain industries. (2) is strictly a macroeconomic problem which only affects aggregate output, prices and employment. (3) has no effects into the domestic economy. (4) is intimately intertwined, along with microeconomic and macroeconomic effects.
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