The Native American Graves Protection and Repatriation Act (NAGPRA) is a U.S. law enacted in 1990. It aims to protect the rights of Native American tribes regarding the treatment of their ancestors' remains and cultural items. NAGPRA requires federal agencies and institutions that receive federal funding to return Native American human remains and cultural artifacts to their respective tribes. Under NAGPRA, tribes can claim ownership of items such as sacred objects and funerary items. The law also mandates that institutions must consult with tribes to determine the appropriate handling of these items. This act supports the preservation of Native American heritage and promotes respect for their cultural practices.