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Increases in U.S. consumer incomes result in an increase in imports' share of U.S. consumption. Although U.S. consumers reduce the quantity demanded in response to higher import prices, the reduction is sufficiently inelastic that exporter revenue increases. U.S. Free Trade Agreements have made fresh fruits and vegetables available throughout the year and may also have broadened the U.S. marketing window for imports. Now U.S. food safety regulations favor large operations that can absorb the fixed and seasonal food safety related costs. Therefore, the brunt of the increased import competition is borne by small and medium-size producers.
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Knutson et al. (2014) studied this question.
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