Everybody knows that China is the biggest threat to USA, not one of the biggest. South korea was not, is not, will not be a threat to USA. China will replace USA as the No. 1 economy within 20 years. With the development of China, average Chinese americans suffer the most, because Chinese in China can do the same job with low salary. For example, in the old time, many Chinese immigrants, esp for women, can make a living working in the small factor whose products are clothes, shoes, etc Now, no way.