Department profile
International Trade: CFIUS Experts
Global Guide 2026 : USA
Rankings
Ranked Individuals
Ranked Individuals
Chambers Review
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Strengths
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The team is exceptional at distilling complicated regulatory concepts into a comprehensible summary.
International Trade: CFIUS Experts respondentGlobalWilson Sonsini has an-in depth understanding of the interplay between US and EU sanctions and trade controls.
International Trade: CFIUS Experts respondentGlobalWilson Sonsini consistently provides practical, actionable advice that takes into account not only the letter of the law but relevant political or enforcement dynamics.
International Trade: CFIUS Experts respondentGlobal
Notable Practitioners
Provided by Chambers
Band 2 
Band 2 Josephine Aiello LeBeau
Josephine Aiello LeBeau is particularly well regarded for her work with technology companies on trade controls. She often works with clients on compliance with OFAC regulations. Josephine simplifies complex regulations with ease and her trusted insight is invaluable.
International Trade: CFIUS Experts respondentGlobalJosephine understands our business realities very well and is able to provide legal guidance that takes into account practical concerns that the business faces.
International Trade: CFIUS Experts respondentGlobalJosephine Aiello LeBeau has exceptionally strong legal acumen and thoughtfulness, especially on export controls.
International Trade: CFIUS Experts respondentGlobal
Band 2 
Band 2 Stephen Heifetz
Stephen Heifetz is an established CFIUS practitioner who handles a range of national security-related matters. He often works for investment funds and technology companies. Stephen Heifetz is an outstanding CFIUS lawyer.
International Trade: CFIUS Experts respondentGlobalStephen Heifetz has a great focus on understanding what we're looking to do from a business perspective.
International Trade: CFIUS Experts respondentGlobalStephen Heifetz is very knowledgeable, he's a total expert in the CFIUS space.
International Trade: CFIUS Experts respondentGlobal
Band 4 
Band 4 Anne E Seymour
Anne Seymour has a notable practice advising clients on export controls and economic sanctions matters in a variety of sectors, including software and technology. Anne Seymour distills complex regulations and facts into succinct, actionable legal advice.
International Trade: CFIUS Experts respondentGlobalAnne is very good at quickly evaluating extremely complex rules and regulations.
International Trade: CFIUS Experts respondentGlobalAnne Seymour provides great client service and is very responsive to our requests for advice.
International Trade: CFIUS Experts respondentGlobal
Band 4 
Band 4 Joshua Gruenspecht
Joshua Gruenspecht assists clients with CFIUS matters. He regularly works with technology companies and investment funds on securing CFIUS clearance for large deals. Joshua Gruenspecht's ability to distil complicated regulatory concepts succinctly and explain these concepts to both clients and other counsel is phenomenal.
International Trade: CFIUS Experts respondentGlobalJoshua Gruenspecht has really given us excellent service and guidance.
International Trade: CFIUS Experts respondentGlobalJosh Gruenspecht provides crisp and actionable advice.
International Trade: CFIUS Experts respondentGlobal
Ranked Individuals at Wilson Sonsini Goodrich & Rosati (4)
USA
Stephen Heifetz
International Trade: CFIUS Experts
View profile Joshua Gruenspecht
International Trade: CFIUS Experts
View profile Josephine Aiello LeBeau
International Trade: Export Controls & Economic Sanctions
View profile Anne E Seymour
International Trade: Export Controls & Economic Sanctions
View profile
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