The U.S. National Security Review of Foreign Investment system has established new data review rules, which are implemented around two categories of review reasons: sensitive personal data that affects national security and important data in specific fields. Data review is a legal arrangement that responds to the new connotation of national security. The content of data review is targeted, focusing on preventing Countries Concerned from obtaining sensitive personal data, and closely monitoring the development of digital industries in such countries. The data review continues the targeted application of the foreign investment review system to certain countries. At the same time, there is a huge room of discretion when operating data review procedures, and the rules of restricting discretion are vague, generalized, and subjective, making it difficult for investors to seeking remedies. In this regard, Chinese investors investing in the United States should actively seek counter-measures: for data review reasons, taking proactive compliance measures to suppress the specificity of data review: for data review procedures, reverse utilizing the discretion of the review system and striving for mitigation measures; for data review results, judicial remedies can be actively adopted to comprehensively protect the rights and interests of enterprises.