PROFILE

Paul Rosen, former Assistant Secretary of the US Department of Treasury for Investment Security, helps clients navigate significant and complex government regulatory, investigations, and enforcement matters, including the Committee on Foreign Investment in the United States (CFIUS) and outbound investment reviews. Leveraging his work as a federal prosecutor and chief of staff at the Department of Homeland Security, Paul also represents clients on white collar criminal defense, internal and cross-border investigations, and compliance matters.

With nearly 15 years of legal, policy, and management experience across all three branches of government, Paul draws on extensive government and private practice experience to advise corporate and private equity clients on complex cross-border transactions, with a particular emphasis on investment security and regulatory compliance. Combining these diverse and complementary experiences, Paul deftly guides clients on national security and crisis management challenges across industries including:

• Aerospace, Defense & Government Services
• Artificial Intelligence
• Energy & Infrastructure
• Financial Institutions
• Technology

In May 2022, the US Senate confirmed him with bipartisan support to serve as Assistant Secretary of the US Department of Treasury for Investment Security. Paul oversaw CFIUS, leading day-to-day operations and handling hundreds of transaction filings that amounted to hundreds of billions of dollars and shaped US investment security and national security policy. He was instrumental in spearheading the CFIUS compliance and enforcement function, as well as in drafting and implementing the new outbound investment review and enforcement program. Paul also testified before Congress numerous times on important national security and investment policy issues.

Earlier in his career, Paul served in other high-profile roles in the US government, including as Chief of Staff at the US Department of Homeland Security and in several roles at the US Department of Justice, including as counsel to the Assistant Attorney General for the Criminal Division, and as a federal prosecutor in the Criminal Fraud Section, where he investigated and prosecuted complex financial crimes. Paul also served as Counsel on the Senate Judiciary Committee and clerked for US District Judge Gary Allen Fees (ret.) in the Central District of California. 

While in government, Paul earned several awards including the Distinguished Service Medal from the DHS — the highest honor bestowed by the secretary to recognize exceptional and transformational public service. 

Paul also worked as a partner at another international law firm where he led its national security practice.