On November 14, 2008, the Department of the Treasury issued its final rule to implement the Foreign Investment and National Security Act of 2007, which provided guidelines for the Committee on Foreign Investment in the United States when reviewing investments by foreign persons in U.S. businesses for national security issues.
The Foreign Investment and National Security Act of 2007 amended section 721 of the Defense Production Act of 1950 (50 USC §2170) authorizing the President to review merger, acquisitions and takeovers by or with any foreign person which could result in foreign control of any person engaged in interstate commerce in the United States to determine the effects of such transaction on the national security of the United States.
FINSA codifies the structure, role, process and responsibilities of the Committee on Foreign Investment in the United States. Previously, CFIUS had existed only by executive order. FINSA establishes CFIUS in statute.
The final regulations go into effect 30 days after publication in the Federal Register: Regulations Pertaining to Mergers, Acquisitions, and Takeovers by Foreign Persons. (.pdf) That means they should be in effect by the end of the year.
See my blog posts: