CFIUS Review is the formal evaluation process conducted by the Committee on Foreign Investment in the United States—an interagency committee chaired by the U.S. Treasury Department. When a foreign person or entity seeks to invest in or acquire a U.S. business, CFIUS assesses whether the transaction threatens national security. The review determines if the investment involves critical infrastructure, defense capabilities, sensitive personal data, or advanced technology that could harm U.S. interests.
How It Works
CFIUS operates on both voluntary and mandatory filing bases. Many investors voluntarily submit deals for review to gain certainty before closing. Mandatory filings apply to foreign investments exceeding specific ownership thresholds (typically 10% voting interest) or involving sensitive sectors. The process begins with a 30-day initial review period. If concerns arise, CFIUS can request a 45-day extended investigation. During this time, the committee examines deal terms, the foreign investor's background, business plans, and potential security implications. The process concludes with a decision: clearance, conditional approval with mitigation measures, or a recommendation to the President to block the transaction.
Why It Matters for Investors
CFIUS review has become increasingly important for both foreign and domestic investors. If you're a startup founder seeking international capital, understanding CFIUS can prevent deal delays or termination. Foreign-backed venture capital funds and angel investors must account for CFIUS requirements when investing in certain sectors. Even domestic investors backing companies with foreign co-investors should be aware of review timelines and potential conditions. Underestimating CFIUS can cost months in deal closure and create uncertainty that kills transactions. Technology, defense, telecommunications, and biotech companies face heightened scrutiny.
Example
A Chinese venture firm wants to invest $50 million in a U.S. semiconductor startup. Because semiconductors are deemed critical to national security, CFIUS jurisdiction is triggered. The committee investigates the foreign firm's ownership, ties to the Chinese government, the startup's customer base (including defense contractors), and how the investment might affect technology access. CFIUS might approve the deal with conditions—such as restricting the foreign investor's board access, limiting data sharing, or requiring security protocols—rather than outright rejection.
Key Takeaways
- CFIUS reviews foreign investments in U.S. companies for national security risks, particularly in defense, technology, and infrastructure sectors
- The process typically takes 30-75 days but can extend longer if complications arise, so timeline planning is critical
- Voluntary filing is often strategic for deal certainty, especially when foreign capital or sensitive intellectual property is involved
- Working with legal counsel experienced in CFIUS requirements protects investors and entrepreneurs from unexpected deal blockers or onerous conditions