Don Ungar has been practicing immigration law since 1962 and is a Certified Specialist in Immigration & Nationality Law by the California State Bar Board of Legal Specialization. He has litigated numerous cases before the Board of Immigration Appeals, the federal district courts and courts of appeals as well as the United States Supreme Court. He was the recipient of the first Jack Wasserman Award for excellence in litigation by the American Immigration Lawyers Association as well as the Phillip Burton Immigration and Civil Rights Award.

Mr. Ungar has taught immigration law at the University of California at Berkeley, Boalt School of Law. Mr. Ungar lectures extensively in various aspects of the immigration law.