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Investment Security Office

IIOFederal agency
What it does

The Investment Security office is responsible for the implementation of Treasury’s responsibilities as Chair of the Committee on Foreign Investment in the United States ("CFIUS").​ CFIUS is an interagency committee that can review certain foreign investments in the United States in order to identify and address any effects on U.S. national security that may arise from the transactions. The CFIUS review process, which operates in the context of the United States’ longstanding open investment policy, focuses solely on national security concerns. The Investment Security office also leads Treasury’s open investment initiatives and dialogues with other countries, particularly as they relate to foreign investment review processes, to promote open investment policies and discourage foreign barriers to U.S. investment.

Where it sits

A component of Treasury Department.

Recent actions

Request for Information Pertaining to the CFIUS Known Investor Program and Streamlining the Foreign Investment Review ProcessFebruary 9, 2026
Treasury Department
Notice on Penalty Inflation Adjustments for Civil Monetary Penalties for Violations of Provisions Pertaining to U.S. Investments in Certain National Security Technologies and Products in Countries of ConcernJanuary 29, 2025
Treasury Department
Penalty Provisions, Provision of Information, Negotiation of Mitigation Agreements, and Other Procedures Pertaining to Certain Investments in the United States by Foreign Persons and Certain Transactions by Foreign Persons Involving Real Estate in the United StatesNovember 26, 2024
Treasury Department
Definition of Military Installation and the List of Military Installations in the Regulations Pertaining to Certain Transactions by Foreign Persons Involving Real Estate in the United StatesNovember 18, 2024
Treasury Department
Provisions Pertaining to U.S. Investments in Certain National Security Technologies and Products in Countries of ConcernNovember 15, 2024
Treasury Department
Definition of Military Installation and the List of Military Installations in the Regulations Pertaining to Certain Transactions by Foreign Persons Involving Real Estate in the United StatesNovember 7, 2024
Treasury Department
Definition of Military Installation and the List of Military Installations in Regulations Pertaining to Certain Transactions by Foreign Persons Involving Real Estate in the United StatesJuly 19, 2024
Treasury Department
Provisions Pertaining to U.S. Investments in Certain National Security Technologies and Products in Countries of ConcernJuly 5, 2024
Treasury Department
View all actions on the Federal Register