"The United States occupies a unique position in the global economy as the largest investor and the largest recipient of foreign direct investment (FDI). As a basic premise, the U.S. historical approach to international investment has aimed to establish an open and rules-based system that is consistent across countries and in line with U.S. economic and national security interests. This policy also has fundamentally maintained that FDI has positive net benefits for the United States and foreign investors, except in certain cases in which national security concerns outweigh other considerations. The Trump Administration has not yet offered a formal statement on its foreign investment policy relative to the Administration's 'America First' policy. Commerce Secretary Wilbur Ross stated at a June 2017 SelectUSA investment summit that the Administration welcomes foreign investment into the U.S. economy."
CRS Report for Congress, RS21118
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html