Experience

• Mr. Dunbar has represented numerous individual, corporate, and associational clients in administrative, civil, and criminal matters, including:

  • obtaining a preliminary injunction on behalf of a leading medical provider against California legislation in a constitutional challenge to the state statute;
  • representing multiple trade associations as amici curiae in defense of the Securities and Exchange Commission’s Regulation BI in the court of appeals;
  • representing petitioners in an APA challenge in the DC Circuit to orders of the Securities and Exchanges Commission under the Exchange Act;
  • representing cryptocurrency stakeholders in administrative rulemakings before the Department of Treasury;
  • representing an Indian tribe in an APA challenge to an order of the Department of the Interior denying trust status for tribal lands, resulting in vacatur of the order by a federal court;
  • representing a financial service provider in an APA challenge to a regulation promulgated by the Consumer Financial Protection Bureau, resulting in vacatur of key parts of the regulation by a federal court;
  • representing trade associations in successful APA litigation challenging the Fiduciary Rule promulgated by the Department of Labor to regulate the life insurance and financial services industries, resulting in vacatur of the Rule;
  • representing a leading global security company in an APA whistleblower appeal under the Sarbanes Oxley Act, resulting in appellate vacatur of the administrative decision below;
  • obtaining a preliminary injunction and temporary restraining order on behalf of a leading medical provider in an APA challenge to an emergency rule promulgated by the Department of Health and Human Services;
  • representing a trade association as an amicus curiae in cost-of-insurance litigation in federal district court, appellate courts, and the US Supreme Court;
  • representing a communications client in an enforcement proceeding by the Federal Communications Commission under the Open Internet rules;
  • representing DC public charter schools before the DC Circuit in a constitutional challenge to District of Columbia school funding practices;
  • representing a major passenger railroad company as intervenor in an APA action in defense of a rule promulgated by the Surface Transportation Board;
  • securing multiple trial and appellate court victories in high-profile litigation challenging a state voter photo ID law;
  • representing domestic citrus growers in an APA challenge to the Department of Agriculture's decision to permit the importation of foreign citrus products into the United States;
  • advising a major insurance company with respect to Dodd-Frank issues involving the Financial Stability Oversight Council;
  • advising technology companies with respect to obligations under the Stored Communications Act;
  • submitting an amicus brief on behalf of a trade association in an APA challenge to the Financial Stability Oversight Council's designation of a non-bank financial institution as a systemically important financial institution;
  • counseling a national air carrier with respect to federal regulations and orders pertaining to international aviation issues;
  • counseling a government contractor with respect to small business regulations involving the US Small Business Administration;
  • representing a major financial institution in class-action litigation involving alleged violations of state law property inspection fees;
  • securing an appellate victory for an Indian tribe with respect to trust acquisition of land for purposes of casino gaming;
  • securing a US Supreme Court victory for a bankruptcy trustee in case involving the interpretation of the Bankruptcy Code;
  • securing a US Supreme Court victory for a state defending its legislative reapportionment plan from constitutional challenge; and
  • securing a victory in the New York Court of Appeals for a major university in a challenge to its expansion plan.