2025 D.C. Bar Tax Conference

Brenda Zent

Special Advisor to the International Tax Counsel at U.S. Department of the Treasury

Brett Bloom

Attorney Advisor at US Department of Treasury - Office of Tax Policy

Brian Galle

Professor of Law at The Georgetown University Law Center

Brian Loss

Branch Chief at Chief Counsel (Corp)

Bridget Weiss

Partner at Arnold & Porter

Caitlin Tharp

Associate at Steptoe LLP

Carrie Garber Siegrist

Adjunct Associate Professor of Law at American University Washington College of Law

Chris Rizek

Partner at Holland & Knight LLP

Christa Bierma

Principal at EY

Christine Speidel

Associate Professor at Villanova University Charles Widger School of Law

Clifford Scherwinski

Director, Pass-Through Entities Practice Area, Large Business and International at Internal Revenue Service

Colleen Laduzinski

Partner at Jones Day

Dan Mayo

Partner and Lead, National Tax Services at Withum

Dan Mayo is a Partner at the public accounting firm of WithumSmith+Brown, PC. Mr. Mayo holds a Juris Doctor degree, cum laude, from the Seton Hall University School of Law and an LL.M. in taxation from the NYU School of Law.

Daniel Geyser

Chair, U.S. Supreme Court Practice at Haynes and Boone, LLP

Daniel Price

Managing Member at Law Offices of Daniel N.Price, PLLC

Debora Gorman

Director, Legal Division at Comptroller of Maryland

Diana Erbsen

Former Deputy Assistant Secretary (International Tax Affairs), Office of Tax Policy at U.S. Department of the Treasury

Disner C. Alexander

Washington DC LTA at TAS - IRS

Dominic DeMatties

Thompson Hine LLP

Doug Poms

Principal at KPMG LLP

Eileen Marshall

Partner at Cooley LLP

Elinor Ramey

Partner at Lowenstein Sandler LLP

Eric Sloan

Partner at Gibson, Dunn & Crutcher LLP

Francesca Ugolini

Chief, Tax Division at U.S. Department of Justice

Helen Yanchisin

Managing Director, Financial Instruments Group at Deloitte Tax LLP

Itai Grinberg

Former Deputy Assistant Secretary (International Tax Affairs), Office of Tax Policy at U.S. Department of the Treasury

Jacqueline Lainez Flanagan

Deputy Director at Center for Taxpayer Rights

Jaime Park

Managing Director at Deloitte Tax

James Holmes

Internal Revenue Service (Invited)

James Kelly

Deputy Associate Chief Counsel at IRS Office of Chief Counsel

Jason Dexter

Special Counsel, Office of Associate Chief Counsel (Passthroughs & Special Industries) at Internal Revenue Service

Jason Yen

Principal at Ernst & Young LLP

Jay Singer

Partner at Hogan Lovells US LLP

Jeff Mitchell

Organisation for Economic Co-operation and Development Centre for Tax Policy and Administration

Jeffrey Vogel

Adjunct Professor of Law at The Georgetown University Law Center

Jeremy Aron-Dine

Senior Counsel at IRS

Jessica Harris

Practitioner-in-Residence at American University Janet R. Spragens Federal Tax Clinic

Jessica Hutchinson

Staff Attorney at University of MD Low Income Taxpayer Clinic

Joe Pari

Weil, Gotshal & Manges LLP

Joe Sullivan

Associate at Covington & Burling

Joe Sullivan is associated with Covington & Burling in Washington, District of Columbia, USA.

John Rayis

Senior Strategic Advisor at Lockton

Jonathan LaPlante

Attorney-Advisor, Office of Tax Policy at U.S. Department of the Treasury

Jorge Oben

Procopio, Cory, Hargreaves & Savitch LLP

Joshua Odintz

Holland & Knight LLP

Justin Campolieta

Partner at Jones Day

Justin Du Mouchel

Internal Revenue Service

Keith Fogg

Harvard Law School

Kelley Miller

Adjunct Professor of Law at The Georgetown University Law Center

Kevin Jacobs

Alvarez & Marsal Tax, LLC

Kevin Knopf

Senior Technician Reviewer at Internal Revenue Service

L.G. "Chip" Harter

Former Treasury DAS (International Tax Affairs) at Retired

Laura Warshawsky

Deputy Associate Chief Counsel, Office of the Associate Chief Counsel (Employee Benefits, Exempt Organizations and Employment Taxes) at Internal Revenue Service

Lawrence Sannicandro

Partner at Pillsbury Winthrop Shaw Pittman LLP

Layla Asali

Member at Miller & Chevalier Chartered

Layla J. Asali practices in a broad range of federal income tax matters, with an emphasis on the taxation of cross-border transactions and business activities. She advises U.S.-based and foreign-based multinational clients on international tax issues, including mergers and acquisitions, intellectual property transactions, supply chain planning, and financings.

Ligeia Donis

Partner at Baker McKenzie LLP

Lily Faulhaber

Georgetown Law

Lindsay Clayton

U.S. Department of Justice, Civil Division

Lisandra Ortiz

Miller & Chevalier Chartered

Luke McCloud

Partner at Williams & Connolly LLP

Lynne Camillo

Internal Revenue Service (Invited)

Macdonald Norman

Attorney at Kostelanetz LLP

Maricarmen Cuello

Area Director, International, Independent Office of Appeals at Internal Revenue Service

Marie Milnes-Vasquez

Managing Director at Ernst & Young LLP

Mark Graham

Principal at Deloitte

Mark Price

Principal at KPMG

Mark Weiss

Internal Revenue Service (invited)

Mary Alexander

Counsel at Vinson & Elkins

Mary Slonina

Managing Director at KPMG LLP

Megan Hickman

Special Counsel at IRS Office of Chief Counsel, ACCI

Melissa Wiley

Partner at Lowenstein Sandler LLP

Michael Caballero

Covington & Burling LLP

Michael Plowgian

Former Deputy Assistant Secretary (International Tax Affairs), Office of Tax Policy at U.S. Department of the Treasury

Michael Schler

Retired Partner at Cravath, Swaine & Moore LLP

Michael Snyder

Acting Deputy Executive Director of Case Advocacy at Taxpayer Advocate Service

Mindy Herzfeld

Counsel at Potomac Law Group

Mindy Herzfeld is a Professor of Tax Practice at the University of Florida, Frederic G. Levin College of Law, and Counsel at Potomac Law Group.

Miri Forster

Partner and Tax Controversy Leader at Eisner Advisory Group LLC

Monisha Santamaria

KPMG US LLP

Natalie Punchak

U.S. Department of the Treasury

Olivia Orobona

Principal at PwC

Patrick Browne, Jr.

Marsh USA LLC

Paul Crispino

Attorney Advisor at U.S. Department of the Treasury

Paul Oosterhuis

Of Counsel at Skadden, Arps

Rachel Levy

Associate Chief Counsel (EEE) at IRS Office of Chief Counsel

Rachel Miller-Ziegler

Partner at Munger, Tolles & Olson LLP

Randy Herndon

Deputy Chief Tax Counsel, Republican Staff at Senate Finance Committee

Rebecca Lee

Principal at PricewaterhouseCoopers LLP

Rebecca Thompson

Senior Advisor at USDT

Richard Larkins

Managing Director, U.S. National Tax at Andersen Tax LLC

Rocco Femia

Member at Miller & Chevalier Chartered

Rochelle Hodes

Crowe LLP

Samantha Evei

Managing Director at Andersen Tax LLC

Sarah Haradon

Attorney-Advisor, Office of Tax Policy at U.S. Department of the Treasury

Sarah Schaefer

Chief Tax Advisor, Democratic Staff at Senate Finance Committee

Scott Levine

Deputy Assistant Secretary (International Tax Affairs) at U.S. Department of the Treasury

Scott Levine is the Acting Deputy Assistant Secretary (International Tax Affairs) in the Department of the Treasury, where he leads the Office of Tax Policy’s work on international tax affairs, including regulations, treaties, and the OECD/G20 Inclusive Framework on BEPS negotiations on Pillar 1 and Pillar 2.

Sean Clerget

Chief Tax Counsel at Republican Staff, House Committee on Ways and Means

Seth Hanlon

Deputy Assistant Secretary for Tax and Climate Policy at U.S. Department of the Treasury

Shane McCarrick

Special Counsel at IRS Office of Associate Chief Counsel (International)

Shariff Barakat

Partner at Akin Gump Strauss Hauer & Feld LLP

Shariff represents clients involved in the acquisition, development and financing of power generation and infrastructure projects, with a particular focus on tax equity financing.

Shira Helstrom

Partner at ArentFox Schiff LLP

Shirley Chin

Head of Tax Insurance at Willis Towers Watson (WTW)

Susan Massey

VP, Tax Research at Blue J

Teisha Ruggiero

Branch Chief, Branch 4 at ACCI

Tim Shuman

McDermott Will & Schulte LLP

Timothy (Tim) S. Shuman is the global head of McDermott’s Tax practice and is based in the Washington, DC office. He focuses his practice on corporate and international tax matters for US and non-US multinationals and large family offices, with particular emphasis on domestic and cross-border acquisitions, dispositions, restructurings and liquidations.

Tom Barthold

Chief of Staff at Joint Committee on Taxation

Tom Cullinan

Shareholder at Chamberlain, Hrdlicka, White, Williams & Aughtry

Tom Cullinan is a Shareholder in the Tax Controversy Section of Chamberlain’s Atlanta office. Prior to joining the firm, Tom served as the Counselor to the IRS Commissioner and then as the acting IRS Chief of Staff.

Tom West

Capitol Tax Partners

Veena Murthy

Managing Director at PwC US Tax LLP

Viv Hunter Turner

Principal at Groom Law Group

Wade Sutton

PwC US Group LLP

William Alexander

Of Counsel at Skadden

Yoav Shans

Partner at McGill and Partners

Yoav Shans is a partner and the tax insurance broking leader at McGill and Partners. Yoav helps sophisticated corporates, financial sponsors and high-net-worth individuals achieve their business objectives by managing tax risk in the M&A, planning, controversy, and renewable energy tax credit contexts.

Zeb Kelley

Branch Chief, IRS Chief Counsel, International Branch 6 at Internal Revenue Service