1. What Makes Cross-Border Due Diligence Different
Domestic deals run on one regulatory system. Cross-border transactions do not.
When a foreign party is involved, the review has to satisfy multiple overlapping frameworks at once: U.S. .ederal requirements, host-country foreign investment controls, and disclosure obligations under laws that don't map cleanly onto each other. A single transaction can trigger CFIUS, HSR, and FCPA review simultaneously, each running on its own deadline and its own agency's standards.
New York sits at the center of this. New York law governs a large share of U.S. .cquisition agreements, and the Commercial Division of the New York Supreme Court has developed detailed case law on MAC clauses, closing conditions, and specific performance in deal disputes. When something goes wrong in a cross-border transaction, New York courts are often where it gets resolved.
2. Core Components of Cross-Border M&A Legal Due Diligence
Cross-border due diligence covers more ground than a domestic review. Three areas in particular tend to generate the most legal exposure when a foreign party is involved.
Corporate Structure and Ownership Verification
Our firm starts by confirming the target's legal existence and ownership chain across every relevant jurisdiction. That means:
- Ultimate beneficial ownership (UBO) identification under FinCEN and OFAC requirements
- Corporate registration verification in each operating jurisdiction
- Review of any foreign state-owned enterprise (SOE) involvement, which raises immediate CFIUS concerns
- Analysis of share class structures, preemptive rights, and transfer restrictions under the target's home-country law
Ownership gaps in foreign jurisdictions are a common trigger for post-closing indemnification disputes. They are almost always harder to reconstruct after signing than to identify before.
Material Contracts and Foreign Counterparty Risk
Cross-border targets regularly hold contracts governed by foreign law, which introduces risks a domestic due diligence framework doesn't address. Our attorneys review each material agreement for:
- Change-of-control provisions and whether assignment requires foreign regulatory approval
- Governing law and forum selection clauses that could expose the buyer to litigation in unfamiliar jurisdictions
- Representations and warranties under foreign legal standards, which may not carry the same scope or remedy as U.S. .quivalents
- Automatic termination or renegotiation rights triggered by a change in foreign ownership
For the scope of a full review, see our Legal Due Diligence practice page.
Regulatory and Compliance Review
In a cross-border deal, more than one federal agency may need to sign off before closing. Depending on deal structure and size, the same transaction can require CFIUS, HSR, and FCPA review at the same time, each running on a different clock.
3. U.S. Federal Regulatory Requirements in Cross-Border M&A
The three federal regimes below apply most frequently to cross-border transactions involving New York parties.
| Regulatory Regime | Governing Law | When It Applies | Timeline |
| CFIUS National Security Review | 50 U.S.C. §4565 (FIRRMA) | Mandatory for TID U.S. .usinesses; voluntary for other covered transactions | 30-day initial review; up to 45-day investigation phase |
| HSR Premerger Notification | 15 U.S.C. §18a (Clayton Act §18a) | When size-of-transaction and size-of-person thresholds are met, adjusted annually by the FTC | 30-day waiting period; 15 days for cash tender offers |
| FCPA Anti-Bribery Review | 15 U.S.C. §78dd-1 et seq. | When a U.S. .exus exists; no monetary threshold | No fixed statutory deadline |
Cfius National Security Review
CFIUS reviews transactions where a foreign entity acquires control of, or a substantial interest in, a U.S. .usiness. Mandatory filing applies to TID U.S. .usinesses: companies in critical technology, critical infrastructure, or sensitive personal data sectors under FIRRMA. For other covered transactions, voluntary filing is advisable when the acquirer is foreign.
CFIUS clearance can make or break a deal. Our firm's CFIUS & US National Security review starts at the term sheet stage, well before formal filing, to flag jurisdictional issues and potential mitigation requirements before they affect the closing schedule.
Hart-Scott-Rodino (Hsr) Premerger Notification
Under Clayton Act §18a, parties to a qualifying acquisition must notify the FTC and the DOJ Antitrust Division and observe a waiting period before closing. The standard period is 30 days; cash tender offers get 15. A second request from either agency can extend the timeline substantially.
HSR applies based on the size of the transaction and the parties, not where the target is incorporated. Thresholds are adjusted annually by the FTC. Our attorneys handle Hart-Scott-Rodino Filing from initial threshold analysis through early termination requests.
Fcpa and Anti-Bribery Compliance
The Foreign Corrupt Practices Act prohibits U.S. .ompanies and their foreign subsidiaries from paying foreign government officials to obtain or retain business. In M&A, that exposure can transfer to the buyer through successor liability, including pre-closing conduct the buyer knew nothing about at signing.
Our FCPA Compliance review covers the target's third-party agents, government relationships, internal compliance records, and historical payment patterns in every jurisdiction where the target operates.
4. New York-Specific Legal Considerations
Federal regulatory requirements are only part of the picture. Several New York law obligations apply to cross-border deals independently.
The New York Business Corporation Law (BCL) governs merger mechanics for New York-incorporated entities: shareholder approval thresholds, appraisal rights under BCL §910, and the requirements for foreign corporations seeking to qualify to do business in the state. Satisfying federal conditions does not satisfy BCL requirements; both apply separately.
New York's Commercial Division has become the default dispute forum in cross-border acquisition agreements for a reason. Its case law on MAC clause interpretation, closing condition disputes, and specific performance is more developed than most state courts. When deal terms are contested, that body of precedent is consequential.
One New York-specific requirement that buyers regularly overlook: when a cross-border transaction involves the issuance of securities to New York residents, the Martin Act (N.Y. Gen. Bus. Law §352 et seq.) may impose disclosure obligations on top of federal securities law. A disclosure program built around federal requirements alone may fall short.
5. Common Issues in Cross-Border Due Diligence
These problems come up regularly when due diligence wasn't designed for a multi-jurisdiction deal:
- Unresolved beneficial ownership questions that block CFIUS voluntary notice submissions
- Material contracts with silent change-of-control clauses governed by foreign law
- Undisclosed government-related counterparties in the target's supply chain, raising FCPA exposure
- Incomplete corporate records for subsidiary entities in civil law jurisdictions
- HSR filing obligations missed because threshold analysis relied only on domestic revenue figures
- W&I insurance coverage exclusions tied to unresolved foreign regulatory filings
None of these are unusual. They come up consistently in transactions where the due diligence scope was built for a domestic deal.
6. Frequently Asked Questions
Does every cross-border M&A deal require a CFIUS filing?
No. Mandatory filing applies only to transactions involving TID U.S. .usinesses or certain real estate near sensitive government facilities. For other transactions, voluntary CFIUS filing is advisable when the acquirer is foreign and the target has national security relevance.
When does the HSR waiting period begin?
The 30-day period starts when both parties have submitted complete notification forms to the FTC and DOJ. Incomplete submissions don't start the clock, and agencies can issue a pull-and-refile request that resets it entirely.
What is FCPA successor liability?
Under the FCPA, a buyer can be liable for the target's pre-acquisition anti-bribery violations if adequate pre-closing due diligence wasn't conducted, or if a compliant remediation program wasn't implemented after closing.
How long does cross-border M&A due diligence typically take?
Deal size and structure determine the timeline. In New York, a typical cross-border review runs four to eight weeks, with regulatory filings proceeding in parallel. If CFIUS opens an investigation phase, add another 30 to 90 days.
7. Work with Our Cross-Border M&A Attorneys in New York
Our attorneys handle cross-border M&A due diligence from initial scoping through post-closing integration, covering CFIUS, HSR, and FCPA compliance for transactions that involve New York parties or close under New York law. Contact us to discuss how our firm can support your transaction.
31 Jul, 2026
