Co-leader of International Trade

Timothy J. Keeler

Committee on Foreign Investment in the United States (CFIUS), International Trade, Foreign Direct Investment (FDI)

“As a former Chief of Staff to the US Trade Representative . . . Tim Keeler has a deep understanding of how the Administration and Capitol Hill work together to advance and develop US trade policy.”

"He understands the law and has really good instincts with how things will be handled by CFIUS."

Legal 500 US and Chambers USA


Tim Keeler joined Mayer Brown after a varied career in the US Government, serving at the Office of the US Trade Representative (USTR), the US Treasury Department (which chairs CFIUS), and the US Senate Finance Committee. He advises clients on all aspects of CFIUS work, including:


Tim’s significant engagements include:

  • The $5 billion acquisition of a data historian software and software as a service (SAAS), whose customers included US critical infrastructure companies and US Government (USG) agencies, and which required the successful negotiation of a novel NSA.
  • The $1.2 billion acquisition of a software and SAAS provider for the design, modeling, analysis of electrical networks, whose customers include US critical infrastructure and USG agencies, with the successful negotiation of a next-generation NSA.
  • The acquisition of a SAAS provider of applications designed to manage and optimize renewable and distributed energy resources, which required the renegotiation of an existing NSA.
  • The addition of a new Hong Kong-based investor into an existing NSA, successfully convincing CFIUS that no renegotiation of the NSA, and no separate filing, was necessary.


  • “His client service is outstanding, as is his technical knowledge.” – Chambers Global
  • "Timothy Keeler has a deep and substantive understanding of the evolving CFIUS and trade policy landscape. He has a deep network of connections that are difficult to match." - Legal 500 USA
  • Ranked by Chambers Global for International Trade: CFIUS Experts (USA)


  • Tulane University, BSE, Engineering Science
  • George Mason University School of Law, JD, magna cum laude
    Associate Editor, George Mason Law Review


  • District of Columbia

Professional & Community Involvement

  • Adjunct Professor of Law (2010-2017), Georgetown School of Law
  • Adjunct Professor (2018), Georgetown School of Foreign Service
  • Member, Board of Directors, The Washington International Trade Association
  • Term Member, Council on Foreign Relations (2010-2015)