National security review is an important part of the political risk of Chinese investment in the United States. In the context of substantive disputes on market entry，tussles on process in individual cases become more significant. Due process is not only the key concern for Sany-associated Ralls Corp. to sue the Committee on Foreign Investment in the United States and Obama，but also an important principle of both the U.S. judiciary and the U.S. constitution. As a basic principle by which the system of checks and balances functions and as a powerful weapon employed to restrict the government，to ensure market performance，and to safeguard the legal rights of market players and citizens，due process （mainly the due procedure） plays an important role in upholding and striving for rights through judicial reviews. However，its weight has been significantly reduced in confronting the power of national security review. This paper attempts to analyze the entire process before，during，and after the U.S. national security review of Chinese investment in the U.S. and raise several strategic reflections on handling the U.S. national security review on the basis of process clarification of the case Ralls Corp. v. Committee on Foreign Investment in the United States，et. al.