On January 13, 2020, the U.S. Department of the Treasury issued two final rules for the Committee on Foreign Investment in the United States (CFIUS) implementing the Foreign Investment Risk Review Modernization Act (FIRRMA), which was enacted on August 13, 2018. The final rules largely adopt the proposed rules published on September 17, 2019, with several key clarifications and modifications. As discussed previously, FIRRMA has resulted in two separate rulemakings that expand CFIUS’ jurisdiction to include (i) certain non-controlling investments in U.S. businesses engaged in critical technology, critical infrastructure, and sensitive personal data, and (ii) certain real estate transactions. The final rules will be published in the Federal Register on January 17, 2020 and will go into effect February 13, 2020 (Effective Date), with one exception described below. We anticipate that the Treasury Department will publish a separate rule concerning filing fees soon.