However, the Syngman Rhee regime in Korea and the U.S. aid policy differences, the weakness of Chang Myon regime, the United States expect political stability and economic development is not achieved in South Korea. 但由于李承晚政权与美国援韩政策的分歧,张勉政权的软弱无能,美国所期待的政治稳定与经济发展并没有在韩国实现。