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CFIUS logo

U.S. Department of the Treasury

Committee on Foreign Investment in the United States

Secure Investment, Strong America

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Committee on Foreign Investment in the United States

The Office of Investment Security supports the U.S. Department of the Treasury's role as Chair of CFIUS to protect national security while maintaining the United States' open investment environment.

Our Mission

The Office of Investment Security fulfills the U.S. Department of the Treasury's role as chair of the Committee on Foreign Investment in the United States (CFIUS), an interagency committee authorized to review certain transactions involving foreign investment in the United States and certain real estate transactions by foreign persons, in order to determine the effect of such transactions on the national security of the United States.

America First Investment Policy

President Trump reaffirmed the United States' commitment to a strong open investment environment while enhancing protection against evolving national security threats.

Read the policy guidance

Recent Actions

April 24, 2025 Deputy Secretary Michael Faulkender’s Remarks at ACI CFIUS Conference November 19, 2024 Remarks by Assistant Secretary for Investment Security Paul Rosen at the Third Annual CFIUS Conference July 25, 2024 Testimony of Assistant Secretary for Investment Security Paul Rosen Before the Banking, Housing, and Urban Affairs Committee, U.S. Senate
Submit a Filing Submit a Tip Review FAQs

Secure Investment, Strong America

Committee on Foreign Investment in the United States

The Office of Investment Security supports the U.S. Department of the Treasury's role as Chair of CFIUS to protect national security while maintaining the United States' open investment environment.

CFIUS logo

At a Glance

  • Scope

    Covered Transactions

    Reviews eligible control, non-controlling, and real estate transactions involving foreign persons.

    Review the process

  • Guidance

    Filing Requirements

    Use official submission instructions, filing fees, and guidance to prepare complete notices or declarations.

    View filing guidance

  • Monitoring

    Non-Notified Activity

    CFIUS monitors potential non-notified transactions and can request additional information when needed.

    Explore monitoring

Get Started

Choose the path that fits your task and move quickly to the right guidance.

  • Step 1

    Submit a Filing

    Start a declaration or notice process using CFIUS filing guidance and submission instructions.

    Filing Instructions

  • Step 2

    Submit a Tip

    Report potential foreign investment activities that may raise national security concerns.

    Submit a Tip

  • Step 3

    Review FAQs

    Find answers to common questions about filings, process timelines, and CFIUS review authorities.

    Read FAQs

Our Mission

The Office of Investment Security fulfills the U.S. Department of the Treasury's role as chair of the Committee on Foreign Investment in the United States (CFIUS), an interagency committee authorized to review certain transactions involving foreign investment in the United States and certain real estate transactions by foreign persons, in order to determine the effect of such transactions on the national security of the United States.

Recent Actions

Track official press releases and public updates from Treasury leadership.