Foreign Direct Investment and US Policy

When a foreign company tries to buy an American semiconductor firm or build a factory near a military base, the transaction doesn't just move money across borders -- it triggers a national security apparatus that can kill the deal entirely, reshape its terms, or delay closing by months. In 2024 alone, CFIUS formally investigated 98 non-notified transactions it discovered on its own, and 55% of all filed notices escalated to full investigation. If you own shares in a company that becomes an acquisition target (or an acquirer venturing abroad), these regulatory dynamics directly affect your returns. The fix isn't avoiding companies with international exposure. It's understanding which sectors face the highest scrutiny and pricing regulatory risk before the market does.

What FDI Actually Is (And Why the Numbers Matter)

Foreign direct investment means a cross-border capital flow where the investor takes at least 10% ownership -- enough to influence management, not just collect dividends. That threshold separates FDI from portfolio investment (where you buy shares passively through a brokerage). FDI shows up in two forms: greenfield investment (building new facilities from scratch, like TSMC constructing fabs in Arizona) and M&A (buying an existing company, like Nippon Steel's attempted acquisition of U.S. Steel).

The scale is enormous. The cumulative stock of foreign direct investment in the United States reached $5.71 trillion by end of 2024, while US direct investment abroad exceeded $6.6 trillion. The US accounted for 31% of the world's total inward FDI stock in 2024 -- up from 21% just a decade earlier. That concentration reflects something important: despite rising geopolitical friction, global capital still treats the US as the default destination.

The point is: FDI isn't abstract macroeconomics. It's the reason a Japanese automaker builds plants in Tennessee, why European pharma companies acquire Boston biotech startups, and why the semiconductor supply chain is being physically restructured on American soil right now.

What Drives FDI Flows (The Four Forces You Should Track)

Market access remains the dominant driver. Companies invest where their customers are, and the US represents the world's largest consumer market with GDP exceeding $28 trillion. When Toyota or BMW builds American factories, they're not chasing cheap labor -- they're eliminating trade barriers and shipping costs to serve the market directly.

Cost incentives have become increasingly aggressive. The CHIPS and Science Act catalyzed over $540 billion in announced semiconductor investments alone. State-level tax incentives, infrastructure packages, and workforce training programs stack on top of federal subsidies. TSMC's commitment to invest $165 billion in US semiconductor manufacturing (the largest greenfield FDI project in American history) wouldn't exist without these incentives.

Technology and talent access pulls capital toward innovation clusters. Silicon Valley, Boston's biotech corridor, and research universities create gravity wells for foreign investors who can't replicate those ecosystems at home. This driver increasingly collides with national security concerns (more on that below).

Currency and financial conditions affect timing. A weaker dollar makes US assets cheaper for foreign buyers, accelerating inbound M&A. But this driver is secondary -- companies rarely make decade-long facility investments based on exchange rate speculation.

Why this matters: when you see manufacturing FDI surge (as it did in early 2025, with $71 billion in manufacturing flows in the first half alone), you're watching these four forces interact in real time. Policy incentives pull, market access attracts, and currency conditions set the pace.

CFIUS: The Gatekeeper You Need to Understand

The Committee on Foreign Investment in the United States reviews foreign acquisitions and investments that could affect national security. Originally a sleepy interagency committee when established in 1975, CFIUS gained real teeth through the Foreign Investment Risk Review Modernization Act (FIRRMA) of 2018 -- and it's been using them aggressively.

CFIUS is chaired by the Treasury Department and includes representatives from Defense, State, Commerce, Homeland Security, and other agencies. The committee examines transactions for national security risks including access to sensitive personal data, proximity to military installations, critical technology exposure, and supply chain vulnerabilities.

Here's what the enforcement landscape looks like now:

Mandatory filings apply to transactions involving critical technologies, critical infrastructure, or sensitive personal data of US citizens. Transactions involving foreign government-controlled entities face heightened scrutiny. Penalties for failing to file can reach the entire value of the transaction (not a percentage -- the whole deal).

Review timelines run 45 days for initial review, plus an additional 45-day investigation if concerns arise. In practice, many complex deals take considerably longer. CFIUS can approve unconditionally, approve with mitigation conditions, or recommend the President block the transaction outright.

The blocking power is real. In May 2024, President Biden ordered the unwinding of a Chinese company's purchase of real estate near Francis E. Warren Air Force Base in Wyoming -- the first time a President blocked a transaction under CFIUS's real estate authority. Biden also blocked Nippon Steel's acquisition of U.S. Steel, and separately prohibited a Chinese investment in a US audiovisual technology company. These weren't theoretical threats; they were completed or pending deals that got killed.

Mitigation agreements are becoming the norm for approved-but-sensitive deals. These can require separate boards for US operations, restricted facility access, data handling protocols, divestiture of specific units, or ongoing compliance monitoring. What this means in practice: even when CFIUS doesn't block a deal, it can fundamentally reshape the combined entity's operations and economics.

The New Outbound Investment Regime (The Other Direction)

Starting January 2, 2025, the US doesn't just screen money coming in -- it restricts money going out. Treasury's final rule implementing Executive Order 14105 requires notification of (or outright prohibits) certain US investments into mainland China, Hong Kong, and Macao.

The covered sectors are narrow but strategically critical: semiconductors and microelectronics, quantum information technologies, and certain AI technologies. Covered transactions include equity acquisitions, debt financing, greenfield investments, joint ventures, and even LP investments in non-US pooled funds that invest in these sectors.

The practical point: if you invest in a venture fund, private equity fund, or public company with significant China-facing technology investments, this rule affects capital allocation decisions upstream of your portfolio. Fund managers must now evaluate whether their China-linked investments fall within restricted categories -- adding compliance costs and potentially reducing the investable universe.

Investment flow → National security review → Capital reallocation → Portfolio impact

Chinese FDI into US technology peaked at roughly $46 billion in 2016 and has collapsed to under $2 billion annually by 2023-2024. The outbound restrictions ensure that the decoupling runs in both directions.

The Reshoring Wave (Where the Money Is Actually Going)

The combination of CHIPS Act incentives, CFIUS scrutiny, and supply chain anxiety from COVID and geopolitical tensions has triggered a structural reshoring wave. In 2024, reshoring and FDI-related manufacturing announcements generated 244,000 new US jobs. The computer and electronics sector accounted for 28% of all announced positions, with 88% classified as high or medium-tech roles.

This isn't a temporary blip. 81% of CEOs and COOs now report plans to bring supply chains closer to their end markets (up 18 percentage points from the prior year), and only 2% of companies report having fully completed their reshoring plans. The runway is long.

The test for investors: are you positioned in sectors and companies that benefit from this capital reallocation, or are you holding companies whose cost structures depend on supply chains that are actively being restructured?

Mexico has emerged as a key nearshoring destination (surpassing mainland China as a sourcing alternative), while Vietnam, India, and Thailand attract the next tier of supply chain diversification. For US-listed companies, the question isn't whether reshoring happens -- it's how much margin compression the transition creates before the long-term benefits materialize.

Sector-by-Sector Risk Map (Where Scrutiny Hits Hardest)

Not all sectors face equal regulatory risk. Here's the practical hierarchy:

Highest scrutiny: Semiconductors, AI, quantum computing, and biotechnology. Chinese investment in US tech has been effectively shut down. CFIUS reviews are near-certain for acquisitions in these spaces, regardless of buyer nationality. Deal timelines extend, mitigation agreements are complex, and blocking risk is real.

Elevated scrutiny: Critical infrastructure -- ports, energy assets, telecom networks, water systems. The 2006 Dubai Ports World controversy established political precedents that still influence policy. Chinese-linked purchases of agricultural land near military installations continue drawing Congressional attention and state-level restrictions.

Moderate scrutiny: Healthcare, pharmaceuticals, and advanced manufacturing. Cross-border M&A continues, but transactions involving drug manufacturing capabilities, personal health data, or biotech innovations increasingly trigger review.

Lower scrutiny: Financial services, consumer goods, retail. Foreign bank acquisitions require Federal Reserve approval and insurance deals need state regulatory sign-off, but CFIUS interventions are relatively rare.

The signal worth remembering: regulatory risk in cross-border M&A isn't binary (blocked vs. approved). It's a spectrum that affects deal certainty, timeline, valuation multiples, and post-acquisition operating structure. You price this risk the same way you'd price any other contingency -- by estimating probability and magnitude.

Trump 2.0: The "America First Investment Policy"

In February 2025, President Trump issued a National Security Policy Memorandum establishing an "America First Investment Policy." The key provisions:

• Expedited review for investments from allied and partner nations (reducing friction for Japanese, European, and other allied capital)
• Reduced reliance on open-ended mitigation agreements (preference for cleaner approve-or-block decisions)
• Aggressive use of CFIUS to restrict investments affiliated with foreign adversaries (primarily China, but also Russia and other designated countries)

Why this matters: the policy creates a two-track system. Allied capital gets a smoother path; adversary-linked capital faces a harder wall. For investors, this means country of origin becomes a first-order variable in assessing cross-border deal risk. A German company acquiring a US defense contractor faces a very different CFIUS posture than a Chinese-backed entity attempting the same transaction.

FDI Monitoring Checklist (Tiered by Impact)

Essential (prevents the biggest surprises)

These items catch 80% of FDI-related risks before they hit your portfolio:

• Check foreign ownership percentage in your holdings' proxy statements (any stake above 10% is FDI by definition)
• Monitor CFIUS enforcement actions via Treasury Department public reports (annual)
• Track BEA quarterly FDI data releases for sector-level flow shifts
• Flag any portfolio company involved in a pending cross-border acquisition

High-impact (systematic tracking)

For investors with meaningful international exposure:

• Review acquirer country of origin and government ties for any pending M&A
• Assess target company's critical technology designations and facility security clearances
• Monitor state-level foreign ownership legislation (particularly agricultural land restrictions)
• Track CHIPS Act disbursement progress and new investment announcements

Optional (for concentrated positions in sensitive sectors)

If you hold significant positions in semiconductors, defense, or critical infrastructure:

• Compare similar past CFIUS decisions for precedent on pending transactions
• Monitor outbound investment restriction developments for China-exposed portfolio companies
• Track Congressional hearings on foreign investment -- new legislation often follows public hearings by 12-18 months

Next Step (Put This Into Practice)

Pick your three largest holdings and check their most recent proxy statement or 10-K for foreign ownership disclosures and any mention of CFIUS filings, mitigation agreements, or cross-border transaction risk.

How to do it:

1. Search the SEC EDGAR database for each company's latest proxy statement (DEF 14A) -- look for "foreign ownership" or "beneficial ownership" sections
2. In the 10-K, search for "CFIUS," "foreign investment," or "national security review" in the risk factors section
3. Check whether the company operates in a sector facing elevated CFIUS scrutiny (semiconductors, critical infrastructure, defense, biotech)

Interpretation:

• No foreign ownership flags, no sensitive sector exposure: Low FDI regulatory risk -- focus on other factors
• Significant foreign ownership but allied-nation source: Moderate risk -- monitor for policy changes but don't overweight
• Foreign adversary-linked ownership or sensitive sector + pending M&A: Elevated risk -- price in regulatory timeline and blocking probability before sizing the position

Action: If any holding shows elevated FDI regulatory risk and you can't quantify the probability of a favorable CFIUS outcome, reduce position size to a level where the worst case (deal blocked, stock reprices) doesn't materially impact your portfolio.