Public Law 101-601, dated November 16, 1990, also known as the Native American Graves Protection and Repatriation Act, imposes certain responsibilities on individuals and organizations when they discover Native American cultural items (including human remains) on Federal or tribal lands.

The contracting officer shall insert the clause at 352.226-3, Native American Graves Protection and Repatriation Act, in solicitations, contracts, and orders requiring performance on tribal lands or those for construction projects on Federal or tribal lands.