Gregory J. Mastel

Senior International Trade/Tax Advisor

Phone number
(202) 342-8555

Gregory Mastel brings two and a half decades of experience in trade policy and government relations from both the public and private sectors. He assists clients on tax, trade and other issues, as well as with outreach to the U.S. Congress and administration.

Greg is dedicated to building trust with each client he serves while developing a deep knowledge of their business and issues. He is appreciated by his clients for his insight into how the U.S. Congress and the executive branch work and identifying innovative approaches to solve client problems. He has a proven track record of assisting clients in finding a solution to high-value international trade and government relations problems.

Prior to joining private practice, Greg served as chief international trade advisor and economist for the U.S. Senate Finance Committee. In that position, Greg developed many pieces of legislation related to U.S. trade and tax policy and served as an official congressional advisor to U.S. international trade negotiations. In addition, Greg held a number of positions with Senator Max Baucus, including chief of staff, where he provided counsel on a wide range of political and policy issues. Greg’s firsthand experience working in government allows him to understand, through practical experience, what is needed for his client to succeed from the perspective of the other side of the table.

Greg is cofounder of the Trade Adjustment Assistance Coalition, a 501(c)(3) organization that conducts research on worker adjustment programs; provides information to groups petitioning for assistance from the Trade Adjustment Assistance (TAA) program; and coordinates pro bono legal advice for petitioning groups.

Additionally, Greg has worked with several banks and funds to identify investment opportunities created by changes in policy in the U.S. and around the world.

Greg is not licensed to practice law.

As someone who worked on trade and tax policy issues inside the U.S. Senate, my clients appreciate the unique perspective I bring to their legal and legislative challenges.”

Works with a coalition of U.S. industries to solve a long-term customs problem worth several hundred million dollars to the clients. This effort required successfully integrating legislative and administration advocacy with litigation.

Works with many U.S. companies to obtain suspensions/reductions of tariffs on a number of products that increased the ability of the companies to expand sales, reduce costs and remain internationally competitive.

Supports the efforts of a major global rail company to address a range of federal and state challenges in the U.S. through counseling, lobbying and developing strategy.

Assists a leading technology company to develop a comprehensive international trade strategy.

Worked with major U.S. chemical companies on potential problems arising from efforts to restrict greenhouse gas emissions.

Successfully advocated for U.S. energy efficiency companies for an extension of tax credits to encourage use of their products to conserve energy/boost energy efficiency.

Worked with a major U.S. automaker on complex trade and tax issues.

Advised private equity funds on investment opportunities created by changes in U.S. policy.

Assisted technology and manufacturing companies in addressing international trade problems involving China.

Supporter/participant/member of various Democratic groups, including the Third Way, the Montana Democratic Party and the Democratic Leadership Council.
The Trade Adjustment Assistance Coalition, advisor and cofounder.