The United States is the largest foreign direct investor in the world and also the largest recipient of foreign direct investment. This dual role means that globalization, or the spread of economic activity by firms across national borders, has become a prominent feature of the U.S. economy and that through direct investment the U.S. economy has become highly enmeshed with the broader global economy. This also means that the United States has important economic, political, and social interests at stake in the development of international policies regarding direct investment. With some exceptions for national security, the United States has established domestic policies that treat foreign investors no less favorably than U.S. firms. The terrorist attacks on the United States on September 11, 2001, spurred some Members of Congress and others to call for a reexamination of elements of the traditionally open environment in the United States for foreign investment. In particular, some Members argue that greater consideration must be given to the long-term impact of foreign direct investment on the structure and the industrial capacity of the economy and on the ability of the economy to meet the needs of U.S. defense and security interests. In addition, policymakers from a ...