PeterD.Lepsch Partner

Mr. Lepsch is an administrative law and litigation attorney involved representing tribal governments nationwide since 2001. His representation involves all aspects of tribal governance and sovereignty including relations with the federal government, regulatory compliance, tribal enterprises, membership as well as state-tribal-federal jurisdictional matters. He is especially involved in the firm’s government affairs practice including advocacy of tribal interests before Congress and federal agencies in Washington, D.C.

Mr. Lepsch’s background includes more than a decade consulting and providing legal advice on rule of law, democracy, and governance worldwide in nations in conflict or emerging democracies worldwide including in Afghanistan, Bougainville (PNG), Cambodia, Libya, and Pakistan. During that decade, he served in various roles with the United Nations, the Organization for Security and Cooperation in Europe, numerous non-governmental organizations which including leading programs for USAID and the United States State Department. Those roles required Mr. Lepsch to provide technical assistance to foreign government officials reviewing and drafting constitutions, governance structures, as well as legal and regulatory frameworks especially as related to electoral administration and disputes.

Prior to earning a law degree, he was involved in over 50 local, state, and federal elections as a consultant and worked for more than a year in the United States Senate

Practice Areas

LitigationTribal SovereigntyTribal GovernanceTribal MembershipRegulatory and Program ComplianceGovernment Affairs


Licensed in: New York State and the District of Columbia
Admitted to Practice:

  • United States Supreme Court
  • U.S. Courts of Appeals for the Second and District of Columbia
  • U.S. District Courts for the Southern District of New York and the District of Columbia


New England Law | Boston (J.D., 2002)
The American University, Washington, DC; (M.S. 1997)
Ithaca College, Ithaca, NY (B.A. 1997).

Prior Indian Affairs Legal Experience

Senior Counsel, Fredericks Peebles & Patterson LLP
Owner, Law Office of Peter D. Lepsch
Associate, Hobbs, Straus, Dean & Walker, LLP
Associate, Monteau & Peebles, LLP
Associate, Law Office of Douglas J. Luckerman

Representative Cases

California Valley Miwok Tribe v. Bureau of Indian Affairs, Interior Board of Indian Appeals, Docket No. 19-088 (pending).
California Valley Miwok Tribe v. U.S. Department of the Interior, 19-cv-00917 (D.C. D. C. 2019).
New York v. Mountain Tobacco Co., No. 17-3198 (2d Cir. 2019) (Amicus Curiae Brief)
Michigan Gambling Opposition v. United States, 477 F. Supp. 2d 1, 22 (D.D.C. 2007)
Aroostook Band of Micmac Indians v. Human Right Comm’n, (No. 03-24-B-K) (D. Me. 2004)
Weiner v. Wampanoag Tribe of Gay Head, 443 Mass. 1 (Mass. 2004)
Weiner v. Wampanoag Tribe of Gay Head, 16 Mass. L. Rep. 659 (MA Super 2003)
Narragansett Indian Tribe v. Warwick Sewer Authority, 2003 WL 21512228, Docket No.02-2672 (1st Cir. 2003)
Narragansett Indian Tribe v. Rhode Island, 296 F. Supp. 2d 153 (D. R.I. 2003)


American Bar Association

Selected Legal Authorship

“Cannabis Law Continues to Evolve,” Experience Magazine, American Bar Association, Senior
Division, Nov. 1 2019.

Chapter Author, “Media,”‚Äč International Election Remedies American Bar Assoc. Standing Committee on Election Law and Section on International Law John Hardin Young, Editor (2018).

“Trust Lands,” Treaties with American Indian Tribes: An Encyclopedia of Rights, Conflicts, and Sovereignty, Donald Fixico, Editor (Dec. 2007).

Ecological Effects Know No Boundaries: Little Remedy for Native American Tribes Pursuing
Trans-boundary Pollution under International Law, 11 BUFF. ENVTL. L.J 57 (2003).

A Wolf in Sheep’s Clothing: Is New York’s Move to Cleanup the Akwesasne Reservation an
Endeavor to Assert Authority over Indian Tribes?, 8 ALB. L. ENVTL. OUTLOOK J. 65 (2002).

Professional Responsibility in a Global World: A Lawyer’s Role Redefined in the Age of the
Virtual Practice, 8 NEW ENG. J. INT’L & COMP. L. 37 (2002) [co-author].

Honors and Awards

Editor-in-Chief, New England Journal of International and Comparative Law (2001- 2002)
Westlaw Outstanding Scholastic Achievement Award (2002)
Alpha Phi Sigma [National Criminal Justice Honor Society] (1997)
Student Body President, Ithaca College


B.A., Ithaca College, Ithaca, NY
M.S. The American University, Washington, DC
J.D., New England Law | Boston, Boston, MA

PeterD.Lepsch Partner

Contact Information

Washington, DC (202) 450-4887 (202) 450-5106