They tried to enter the US energy market with the purchase of Unocal, but were blocked by politicians. Other direct investments were also stopped by Congress on the pretext of national security.
如今，中国人不愿意继续在美国投资，这是可以理解的。他们曾尝试购买优尼科，进入美国能源市场，但是美国的政治人士阻止了这一并购举措。国会同样还以国家安全为借口，阻止了中国其他的直接投资。