Maurice Obstfeld writes: "A longstanding challenge for the global economy is the possibility that some countries compete for export markets through artificially low prices. Political leaders and pundits sometimes propose import tariffs to offset the supposed price advantages and exert pressure for policy changes abroad. What proponents often fail to realize is that such tariff policies, while certainly hurting their targets, can also be very costly at home. And surprisingly, the self-inflicted harm can be substantial even when trade partners do not retaliate with tariffs of their own."
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