The United States of America has traditionally been one of the largest importers of direct capital investment. The United States views foreign investment as one of the key factors in the country’s economic growth. At the same time, due to the dispersion of challenges and threats to American global leadership, the interpretation of US national security is qualitatively expanding. The United States is trying to maintain a balance between openness to foreign direct investment and national security objectives. The article analyzes the activities of the Committee on Foreign Investment in the United States. The evolution of legislation concerning the activities of CFIUS is examined as approaches to national security issues change. Particular attention is paid to the analysis of the Law «Foreign Investment Risk Review Modernization Act of 2018». The emergence of this law (it was put forward on a bipartisan basis) indicates the strengthening of supporters of stricter regulation of FDI. The extension of the control functions of the United States Committee on Foreign Investment is clearly visible.