Christopher Armstrong is a Washington, D.C., attorney and a member of Holland & Knight's Public Policy & Regulation Group. Mr. Armstrong's practice focuses on providing legal and lobbying services regarding government investigations and tax policy.

Congressional Investigations

Mr. Armstrong has more than a decade of experience working in government. He most recently served as general counsel and chief oversight counsel to the U.S. Senate Committee on Finance under Chairman Orrin Hatch (R-Utah). In this role, Mr. Armstrong led the committee's oversight and investigations activities and advised the chairman and committee members regarding Senate rules and procedure. Mr. Armstrong also previously served as investigative counsel for the committee under then-Ranking Member Chuck Grassley (R-Iowa), who earlier this year was named chairman of the Senate Finance Committee for the 116th Congress. In this role, Mr. Armstrong served as lead counsel on several high-profile investigations within the pharmaceutical and medical device industries. In the House of Representatives, Mr. Armstrong conducted congressional investigations for Chairman Dave Camp (R-Michigan) on the Committee on Ways and Means. This work included issuance of the committee's first subpoena in more than two decades and leading investigations across the committee's jurisdiction, including sensitive tax-related investigations, oversight of government contractors, and inquiries related to compliance with the Stark Law and Anti-Kickback Statute.

Public Policy and Tax Legislative Practice

While on Capitol Hill, Mr. Armstrong worked closely with committee staff, congressional leadership and member offices on a wide range of policy matters, including the Tax Cuts and Jobs Act of 2017. In addition, he has been involved with a variety of legislation, including Taxpayer First Act of 2018, Protecting Americans from Tax Hikes Act of 2015 (PATH Act) and Taxpayer Protection Act of 2016, as well as the original bill to prevent identity theft and tax refund fraud.

Mr. Armstrong served four years as oversight counsel for the U.S. House of Representatives' Ways and Means Committee under then-Chairman David Camp (R-Mich.). In this role, he worked closely with the tax and health policy teams on a broad range of matters, including the Patient Protection and Affordable Care Act (ACA) provisions and the Tax Reform Act of 2014. Mr. Armstrong also was the lead attorney on numerous hearings and legislation concerning the Internal Revenue Services (IRS), tax administration, ACA and debt limit.

While serving on the Senate Finance Committee, Mr. Armstrong also advised the chairman and nominees as lead counsel during the confirmation process for nominees to the U.S. Department of Treasury, IRS, U.S. Department of Health and Human Services (HHS) and the U.S. Trade Representative (USTR).

Early in his career, Mr. Armstrong was an attorney for the U.S. Office of Special Counsel (OSC), where he investigated allegations of Whistleblower Protection Act and Hatch Act violations. In addition, he devised prosecution strategy and produced legal opinions for OSC prosecutors and various Inspectors General.

Not yet admitted to District of Columbia Bar; admitted to Virginia Bar only and practicing under supervision of lawyers licensed to practice in District of Columbia.


  • The Catholic University of America Columbus School of Law, J.D.
  • Kennesaw State University, B.S., Political Science
Bar Admissions/Licenses
  • Virginia
Court Admissions
  • Supreme Court of Virginia
  • U.S. Tax Court
  • The Federalist Society, Executive Committee, Administrative Law & Regulation Practice Group
  • American Bar Association, Legislative Process and Congressional Investigations Committee, Co-Chair
  • Independent Sector, Public Policy Fellow
  • Hoover Institution at Stanford University, Congressional Fellow
  • Stennis Center for Public Service Leadership, Congressional Fellow
  • Catholic University Law Review, Editor
Honors & Awards
  • The Legal 500 USA, Government Relations, 2019


Speaking Engagements