The Committee on Foreign Investment in the United States (CFIUS) is comprised of nine members, two ex officio members, and other members as appointed by the President representing major departments and agencies within the federal executive branch. While the group generally has operated in relative obscurity, the proposed acquisition of commercial operations at six U.S. ports by Dubai Ports World in 2006 placed the group's operations under intense scrutiny by Members of Congress and the public. Prompted by this case, some Members of the 109th and 110th Congresses questioned the ability of Congress to exercise its oversight responsibilities given the general view that CFIUS's operations lack transparency. Other Members revisited concerns about the linkage between national security and the role of foreign investment in the U.S. economy. Some Members of Congress and others argued that the nation's security and economic concerns have changed since the September 11, 2001, terrorist attacks and that these concerns were not being reflected sufficiently in the Committee's deliberations. In addition, anecdotal evidence seemed to indicate that the CFIUS process was not market neutral. Instead, a CFIUS investigation of an investment transaction may have been perceived by some firms and by some in the financial markets as a negative factor that added to uncertainty and may have spurred firms to engage in behavior that may not have been optimal for the economy as a whole. On July 12, 2016, Senator Charles Grassley introduced S. 3161 to include the Secretary of Agriculture as a permanent member of the CFIUS and to include the national security impact of foreign investments on agricultural assets as part of the criteria the Committee uses in deciding to recommend that the President block a foreign acquisition.

Americans have long been ambivalent toward foreign direct investment in the United States. Foreign multinational corporations may be a source of capital, technology, and jobs. But what are the implications for US workers, firms, communities, and consumers as the United States remains the most popular destination for foreign multinational investment? Theodore H. Moran and Lindsay Oldenski find that foreign multinational firms that invest in the United States are, alongside US-headquartered American multinationals, the most productive and highest-paying segment of the US economy. These firms conduct more research and development, provide more value added to US domestic inputs, and export more goods and services than other firms in the US economy. The superior technology and management techniques they employ spill over horizontally and vertically to improve the performance of local firms and workers. As the United States wants not only to expand employment but also create well-paying jobs that reverse the falling earnings that many US workers and middle class families have suffered in recent decades, it is more important than ever to enhance the United States as a destination for multinational investors