一、美国政府对主要面向国内市场的竞争企业的反垄断热情巨大在美国，如果企业主要面向国内市场竞争，政府就通过反垄断法适度限制企业的规模，促进有效竞争，使资源得到有效配置，经济效率得以提高。进入７０年代以来，美国政府虽放宽了对企业兼并的管制，但是对主要面向国内 First, the U.S. government has a huge anti-monopoly enthusiasm for competitive enterprises mainly in the domestic market In the United States, if the enterprises mainly face competition in the domestic market, the government will moderately restrict the scale of the enterprises through antitrust laws to promote effective competition so that resources can be effectively allocated, Economic efficiency is improved. Since the 1970s, the U.S. government has relaxed its control of mergers and acquisitions,