Jenner & Block Associate Leonard Powell Secures Victory for Native Americans as US Supreme Court Declines to Weigh 'Indian' Definition

A Jenner & Block team, led by Associate Leonard R. Powell, secured a victory in Oklahoma v. Wadkins on October 11 when the US Supreme Court refused to hear Oklahoma’s petition to drastically limit who qualifies as an “Indian” under federal law.

Oklahoma charged Mr. Wadkins for alleged offenses committed within the boundaries of the Choctaw Reservation. Following the Court’s 2020 decision in McGirt v. Oklahoma, Mr. Wadkins’ case was remanded to the state trial court to determine his Indian status. Though the trial court determined he was not an “Indian,” the Oklahoma Court of Criminal Appeals unanimously reversed that decision based on Wadkins’ post-offense enrollment in the Choctaw Nation, the Certificate of Degree of Indian Blood card that was issued to him when he was an infant, and his receipt of health services reserved only to Indians.

“We are pleased that the Supreme Court left in place the Oklahoma Court of Criminal Appeals decision holding that Mr. Wadkins is an Indian,” said Mr. Powell. “A decision to grant certiorari in this matter could have had severe consequences, including depriving non-enrolled Indians of federally funded healthcare.”

Mr. Powell was assisted in this case by Partner Zachary C. Schauf. Both lawyers are members of Jenner & Block’s Native American Law Practice, which has a national reputation for preserving, promoting, and protecting tribal sovereignty. The practice obtained the landmark victory for Indian Country in McGirt, a ruling that holds the federal government to its treaty obligations by recognizing that almost half of Oklahoma remains Indian country, as promised almost 200 years ago in treaties with Oklahoma tribes including the Creek Nation.

© 2026 Jenner & Block LLP. Attorney Advertising. Jenner & Block LLP is an Illinois Limited Liability Partnership including professional corporations. This publication, presentation, or event is not intended to provide legal advice but to provide information on legal matters and/or firm news of interest to our clients and colleagues. Readers or attendees should seek specific legal advice before taking any action with respect to matters mentioned in this publication or at this event. The attorney responsible for this communication is Brent E. Kidwell, Jenner & Block LLP, 353 N. Clark Street, Chicago, IL 60654-3456. Prior results do not guarantee a similar outcome. Jenner & Block London LLP, an affiliate of Jenner & Block LLP, is a limited liability partnership established under the laws of the State of Delaware, USA and is authorised and regulated by the Solicitors Regulation Authority with SRA number 615729. Information regarding the data we collect and the rights you have over your data can be found in our Privacy Notice. For further inquiries, please contact dataprotection@jenner.com.

Jenner & Block Associate Leonard Powell Secures Victory for Native Americans as US Supreme Court Declines to Weigh 'Indian' Definition

A Jenner & Block team, led by Associate Leonard R. Powell, secured a victory in Oklahoma v. Wadkins on October 11 when the US Supreme Court refused to hear Oklahoma’s petition to drastically limit who qualifies as an “Indian” under federal law.

Oklahoma charged Mr. Wadkins for alleged offenses committed within the boundaries of the Choctaw Reservation. Following the Court’s 2020 decision in McGirt v. Oklahoma, Mr. Wadkins’ case was remanded to the state trial court to determine his Indian status. Though the trial court determined he was not an “Indian,” the Oklahoma Court of Criminal Appeals unanimously reversed that decision based on Wadkins’ post-offense enrollment in the Choctaw Nation, the Certificate of Degree of Indian Blood card that was issued to him when he was an infant, and his receipt of health services reserved only to Indians.

“We are pleased that the Supreme Court left in place the Oklahoma Court of Criminal Appeals decision holding that Mr. Wadkins is an Indian,” said Mr. Powell. “A decision to grant certiorari in this matter could have had severe consequences, including depriving non-enrolled Indians of federally funded healthcare.”

Mr. Powell was assisted in this case by Partner Zachary C. Schauf. Both lawyers are members of Jenner & Block’s Native American Law Practice, which has a national reputation for preserving, promoting, and protecting tribal sovereignty. The practice obtained the landmark victory for Indian Country in McGirt, a ruling that holds the federal government to its treaty obligations by recognizing that almost half of Oklahoma remains Indian country, as promised almost 200 years ago in treaties with Oklahoma tribes including the Creek Nation.

© 2026 Jenner & Block LLP. Attorney Advertising. Jenner & Block LLP is an Illinois Limited Liability Partnership including professional corporations. This publication, presentation, or event is not intended to provide legal advice but to provide information on legal matters and/or firm news of interest to our clients and colleagues. Readers or attendees should seek specific legal advice before taking any action with respect to matters mentioned in this publication or at this event. The attorney responsible for this communication is Brent E. Kidwell, Jenner & Block LLP, 353 N. Clark Street, Chicago, IL 60654-3456. Prior results do not guarantee a similar outcome. Jenner & Block London LLP, an affiliate of Jenner & Block LLP, is a limited liability partnership established under the laws of the State of Delaware, USA and is authorised and regulated by the Solicitors Regulation Authority with SRA number 615729. Information regarding the data we collect and the rights you have over your data can be found in our Privacy Notice. For further inquiries, please contact dataprotection@jenner.com.

News and Insights

Event

Associate Steven Arango to Speak at the Veterans' Legal Career Fair

On September 18, Associate Steven Arango will speak on a panel at the Veterans' Legal Career Fair (VLCF), the only legal career fair in the United States dedicated to veterans, active-duty service members, and military spouses.

September 18, 2026

Publications

In American Banker, Partner Laurel Loomis Rimon Weighs in on OCC's Handling of Fintech Bank Charter Applications

Partner Laurel Loomis Rimon spoke with American Banker about how the Office of the Comptroller of the Currency is approaching bank charter applications from fintechs, amid a growing wave of companies seeking charters from federal regulators.

August 18, 2026

Event

Partner David Greenwald to Speak at PLI Program on Privilege and AI

On August 17, David Greenwald will speak at "Fitting New “Tech” Into the Attorney-Client Privilege and Work Product Protection," a virtual program hosted by the Practising Law Institute (PLI).

August 17, 2026