Brian T.  McGuire

Brian T. McGuire

Policy Director


Former chief of staff to Senate Republican Leader Mitch McConnell. Deep knowledge of the Department of the Treasury’s regulatory process. Bridges the private sector and the Republican conference through smart, measured political communication.

Brian McGuire leverages his senior-level executive and legislative branch experience coupled with his innate understanding of Republican politics for clients in need of incisive government intervention. He most recently served in a Senate-confirmed position as the Department of the Treasury’s assistant secretary for Legislative Affairs and, prior to that role, served as a longtime aide and chief of staff to Senate Majority Leader Mitch McConnell (R-KY). 

A former senior strategic communications advisor and speechwriter, Brian understands the people, policies and messages that drive results on Capitol Hill. He builds champions for clients and serves as a shuttle diplomat for their interests with leaders across the spectrum of perspectives within the Republican conference. Brian is also an effective advocate before the Department of the Treasury. He understands the innerworkings of the agency, its unique rulemaking process, and how to maximize opportunities at the right inflection points. 

At Treasury, Brian was involved in some of the most consequential policies of the Trump administration, from the implementation of the Tax Cuts and Jobs Act to Phase II of the administration’s coronavirus response. Prior, Brian served as chief of staff to Sen. McConnell, where he was responsible for guiding home-state priorities, bridging Sen. McConnell’s leadership and personal offices, and overseeing outside political activities. He also served for eight years in a variety of senior communications roles in Sen. McConnell’s leadership office. During the Bush administration, Brian served as chief speechwriter for the secretary of the Department of Housing and Urban Development. 


Representative Matters

Recent Experience

  • Assisted the U.S. Department of the Treasury’s Office of Foreign Assets Control (OFAC) in the identification and classification of a surveillance company aligned with the Chinese Military pursuant to E.O. 14032 (Non-SDN Chinese Military-Industrial Complex Companies List).

  • Helped secure a modification to the Paycheck Protection Program that enabled a private, regional owner of 15 enclosed shopping centers to benefit from this relief.

  • Developed a bipartisan strategy for securing re-authorization of a major relief program for non-public schools in the American Rescue Plan.

  • Developed and executed a bicameral, bipartisan plan for congressional action to clarify the intent of federal laws governing historic preservation easements.

Insights & Publications



  • M.A., Columbia University Graduate School of Journalism
  • B.A., St. John’s College

Community Involvement


Board of Directors, A Purposeful Day



  • Named to POLITICO Playbook’s Power List of “30 Most Powerful People and Groups in Trump’s Washington” (January 2017)