Hyunsun Park (Regina)

Associate

Washington + 1.202.879.3676

Regina Park advises clients on national security, international trade, and government contracting and procurement matters.

Regina assists clients with tariff issues before Customs and Border Protection (CBP); risk mitigation and business transactions related to the International Traffic in Arms Regulations (ITAR) and the Export Administration Regulations (EAR); Office of Foreign Assets Control (OFAC) sanctions and investigations; cyber security compliance; and cross-border transactions reviewed by the Committee on Foreign Investment in the United States (CFIUS). Regina also helps clients navigate the Federal Acquisition Regulation (FAR), understand subcontracting obligations, and comply with related rules.

Regina maintains an active pro bono practice both by representing noncitizens petitioning for habeas relief in the United States and by serving as a guardian ad litem to advocate for the interests of local children in custody disputes before the D.C. Superior Court.

Prior to joining Jones Day, Regina worked as a writer and producer for national broadcast news.

  • September 21, 2026
    Co-Presenter, Briefing on the European Union (EU) Artificial Intelligence (AI) Act and Guidance on Artificial Intelligence from the U.S. Government and States; 2026 Las Vegas Government Contracts Week, FPS
  • September 2, 2026
    On Counsel's Initiative: Mission-Critical Conversations on AI and Cybersecurity
  • July 27, 2026
    Co-Presenter, Briefing on the European Union (EU) Artificial Intelligence (AI) Act and Guidance on Artificial Intelligence from the U.S. Government and States; 2026 Hilton Head Government Contracts Week, FPS
  • March 23, 2026
    Co-Presenter, Briefing on the European Union (EU) Artificial Intelligence (AI) Act and Guidance on Artificial Intelligence from the U.S. Government and States; 2026 Orlando Government Contracts Week, FPS