Cross-border mergers and acquisitions involving multinational workforces generate immigration complexity that can directly affect deal timelines, integration schedules, and post-close employment eligibility. Immigration due diligence — assessing the target company's foreign national workforce, visa status, and compliance exposure — must be completed on the deal's timeline. Post-close, the acquiring company must often re-petition or transfer existing work authorization for hundreds of affected employees, a process that has strict regulatory requirements and narrow timing windows.
In 2026, immigration teams handling M&A engagements are using virtual assistants to manage the data-intensive, coordination-heavy layers of this work — compressing timelines and reducing errors in engagements where both are critical.
Immigration Due Diligence: A Data Collection Challenge at Scale
Immigration due diligence in a cross-border acquisition requires assembling a comprehensive picture of the target company's foreign national workforce: visa categories, petition dates, priority dates for green card sponsorship, expiration timelines, and any compliance vulnerabilities — expired I-9s, RFE histories, or unauthorized changes in job duties.
According to Fragomen, one of the world's largest immigration services firms, immigration due diligence is increasingly a standard component of M&A legal review, particularly in technology, healthcare, and financial services transactions where foreign national talent concentrations are high. Undiscovered immigration compliance issues can become significant post-close liabilities.
The data collection required to complete this assessment involves reaching out to the target company's HR team, collecting visa and I-9 documentation across potentially hundreds of employees, and organizing that data into a structured format for attorney review and risk assessment.
Virtual assistants perform this data gathering and organization function:
Workforce data request coordination. VAs work from a defined data request list, sending structured information requests to designated HR contacts at the target company and tracking receipt of each category of documentation.
Visa status compilation. VAs compile visa type, petition receipt date, expiration date, and priority date information into a master workforce immigration inventory spreadsheet — the primary analytical tool the immigration attorney uses to assess risk and opportunity.
I-9 audit support. VAs organize employee I-9 documentation for review, flagging records with expired work authorization, improper documentation selection, or missing employer certification — the categories of error that most commonly generate post-close remediation requirements.
Post-Close Visa Portability and Transfer Coordination
When a corporate acquisition closes, work authorization portability rules determine which employees can continue working without immediate re-petitioning and which require new filings before the close of a defined window. Under the American Competitiveness in the Twenty-First Century Act (AC21), certain employees with pending I-485 applications and approved I-140 petitions have portability rights — but exercising those rights requires careful coordination.
For employees who require new petitions — most commonly H-1B amendments reflecting the change in employer entity or worksite — the post-close period is a compressed filing sprint. VAs coordinate the data collection required for each affected employee's petition, manage communication with the acquiring company's HR team, and track filing confirmation for each employee in the affected population.
Successor-in-interest I-9 documentation. When an acquisition qualifies as a successor-in-interest transaction, existing I-9 forms may be retained. VAs help compile the documentation establishing successor-in-interest status and organize I-9 records in formats appropriate for retained documentation or re-verification as required.
Compressing Timelines in Time-Sensitive Deals
M&A timelines are driven by business imperatives and regulatory review processes — immigration work must fit within those external constraints. Virtual assistants allow immigration teams to run multiple data collection and coordination tracks in parallel, compressing the time required to complete due diligence review and launch post-close petition processes.
Immigration teams managing M&A engagements can source experienced remote professionals for data coordination and workflow support through providers like Stealth Agents, which staffs legal and professional services practices with trained remote personnel.
Sources
- Fragomen, Immigration Due Diligence in Corporate Transactions, fragomen.com
- U.S. Citizenship and Immigration Services, AC21 Portability, uscis.gov
- American Immigration Lawyers Association (AILA), Corporate Immigration Practice Resources, aila.org