二战后美国的对外贸易政策,经历了一个从保护贸易到自由贸易,又从自由贸易回到保护贸易的过程。美国贸易政策的演变,其本质是美国从本国利益出发,选择最有利于自己的贸易政策。 After World War II, the U.S. foreign trade policy has gone through a process from the protection of trade to free trade and the return of free trade to the protection of trade. The essence of the evolution of U.S. trade policy is that the United States, in the interests of its own country, chooses the trade policy that is most conducive to its own interests.