Emerson Siegle

Emerson Siegle focuses his practice on U.S. regulations governing trade and foreign investment. He serves as a trusted advisor to clients across industries, counseling on international risks that include foreign direct investment regulations, economic sanctions, export controls, and anti-corruption laws. Emerson provides strategic transactional and regulatory advice, helps clients develop and enhance compliance programs, and represents clients in government enforcement matters.

As a leading part of his practice, Emerson routinely counsels clients on issues related to the Committee on Foreign Investment in the United States (CFIUS). In his CFIUS practice, Emerson represents clients in CFIUS reviews, assesses the CFIUS risk of transactions, and advises on the CFIUS impact of transactional and fund structures. His clients include multinational corporations, private equity firms and their portfolio companies, venture capital firms, and U.S. businesses.

Emerson also regularly advises clients on the full scope of U.S. trade laws, including economic sanctions, export controls, import laws, and anti-boycott laws. Emerson advises on regulatory compliance matters, and also assists with internal and government investigations before a range of agencies, including the Office of Foreign Assets Control (OFAC), the Bureau of Industry and Security (BIS), the Directorate of Defense Trade Controls (DDTC), the Department of Justice (DOJ), U.S. Customs and Border Protection (CBP), and the U.S. Census Bureau.

In addition to representing clients on national security matters, Emerson also writes frequently about CFIUS, economic sanctions, export controls, and other international risk topics.

Emerson also maintains an active pro bono practice. He worked on the landmark marriage equality case Obergefell v. Hodges and litigation defending the legality of the Deferred Action for Childhood Arrivals (DACA) program. He has also authored numerous U.S. Supreme Court amicus briefs, represented an organization dedicated to increasing openness and transparency in government, and led litigation to defend voting rights.