Daniel J. O'Brien

Andrew L. Zutz is a lawyer recognized by Best Lawyers in the practice area of Mutual Funds Law. Andrew L. practices law in Washington, District of Columbia Best Lawyers has recognized Andrew L. Zutz since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Andrew L. Zutz is held by other lawyers.

Mary Pivec, based in Woodbridge, Virginia, brings over 45 years of experience as a dedicated management-side immigration and employment attorney at Pivec & Associates PLLC. Mary's immigration law practice is centered on the vital connection between immigration enforcement and labor protections. She represents employers in various cases, including worksite enforcement, I-9 compliance, and investigations by the U.S. Department of Labor's Wage and Hour Division. Her work encompasses civil an...

Benjamin Osorio is a lawyer recognized by Best Lawyers in the practice area of Immigration Law. Benjamin practices law in Fairfax, Virginia Best Lawyers has recognized Benjamin Osorio since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Benjamin Osorio is held by other lawyers.

Leon Fresco is a lawyer recognized by Best Lawyers in the practice area of Immigration Law. Leon practices law in Washington, District of Columbia Best Lawyers has recognized Leon Fresco since 2020. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Leon Fresco is held by other lawyers.

David Ross chairs WilmerHale’s International Trade, Investment and Market Access Practice. Drawing on his experience at the Office of the US Trade Representative (USTR) and on Capitol Hill, Mr. Ross advises companies on the use of domestic and international trade rules to eliminate regulatory barriers and other impediments to their businesses and investments around the world, with a particular focus on the technology, services/financial services, and aviation/aerospace sectors. Mr. Ross...

William Alexander is a lawyer recognized by Best Lawyers in the practice area of Tax Law. William practices law in Washington, District of Columbia Best Lawyers has recognized William Alexander since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which William Alexander is held by other lawyers.

Lynette Kleiza is a family law attorney at Selzer Gurvitch in Bethesda, Maryland, representing individuals and families in a wide range of domestic relations matters. She provides practical legal guidance tailored to each client’s circumstances, recognizing that family law disputes often involve significant personal, financial and emotional considerations. Lynette works closely with clients to help them make informed decisions and move forward with confidence during periods of transitio...

Joshua H. Soven is a partner in the Washington, D.C. office of Gibson, Dunn & Crutcher, LLP. Mr. Soven’s practice focuses on government antitrust investigations, antitrust litigation, and counseling on competition issues. He regularly represents clients before the Antitrust Division of the Department of Justice and the Federal Trade Commission, and in the federal courts. Mr. Soven has served in high-level positions at both U.S. antitrust agencies. Mr. Soven was Chief of the Litigati...

Jeffrey B. Stern serves as co-leader of the Firm's Global Hospitality, Resort and Timeshare Team. He concentrates his practice in the areas of real estate development, timeshare and hospitality with an emphasis on the resort development and finance industries. His clients consist of a wide variety of owners, developers, lenders, financial institutions, and marketing and management companies, ranging in size from entrepreneurial ventures to Fortune 100 corporations in connection with the follo...

Mr. Cassidy focuses on legal issues raised by cross-border business transactions, including antidumping and countervailing duty proceedings, economic sanctions, export controls and customs issues. He is experienced in devising strategies for using trade law procedures, such as the antidumping laws, to achieve business objectives and in resolving disputes between companies and the US government arising from sanctions, export controls and customs laws. Mr. Cassidy served as General Counsel of t...