(October 16, 2023, 11:28 AM EDT) -- WASHINGTON, D.C. — In two separate cases before the U.S. Supreme Court, the Northern Arapaho Tribe and the San Carlos Apache Tribe responded to petitions filed by the secretary of Health and Human Services asking the same question: Whether the Indian Self-Determination and Education Assistance Act (ISDA) requires the Indian Health Service (IHS) to pay “contract support costs” for expenditures of income collected by Indian tribes from third parties under self-determination contracts....