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Collmann Griffin's practice focuses on national security and international trade, with an emphasis on economic sanctions, export controls, information and communications technology and services (ICTS), the Committee on Foreign Investment in the United States (CFIUS), customs, and tariffs. 

Mr. Griffin rejoined Miller & Chevalier after serving in senior policy roles at both the Department of the Treasury's Office of Foreign Assets Control (OFAC) and the Department of Commerce's Bureau of Industry and Security (BIS). At OFAC and BIS, Mr. Griffin was deeply involved in high-stakes, pressing sanctions and export control issues, with a focus on Russia, Iran, China, Venezuela, Afghanistan, counterterrorism, and working with U.S. companies to detect diversion networks used by U.S. adversaries to obtain high-priority U.S. technology. 

He brings this deep government experience to his representation and advice for clients at Miller & Chevalier, including in representation before U.S. government agencies, day-to-day compliance issues, anticipation of future policy priorities and government actions, internal investigations, risk assessments, and gap analyses. 

Prior to joining Miller & Chevalier, Mr. Griffin served as a Law Clerk for the Honorable Judge John M. Rogers on the U.S. Court of Appeals for the Sixth Circuit. During law school, Mr. Griffin interned at the U.S. Trade Representative (USTR), Office of General Counsel (OGC). He also served as Executive Editor for the Georgetown Environmental Law Review.

Government Experience
  • Senior Advisor, Export Administration, BIS, 2023 - 2025
  • Senior Policy Advisor, OFAC, 2020 - 2023
  • Intern, Office of General Counsel, USTR, 2014 
Admissions
State Admissions
  • District of Columbia
  • New York
Clerkships
  • The Honorable Judge John M. Rogers, United States Court of Appeals for the Sixth Circuit
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