The Chickasaw Nation Division of Historic Preservation is responsible for consulting with federal agencies when they take actions that might impact sacred sites and culturally significant historic sites in the homelands states of Oklahoma, Kentucky, Tennessee, Alabama and Mississippi under the National Historic Preservation Act (NHPA) and the Native American Graves Protection and Repatriation Act (NAGPRA). NHPA emphasizes the importance of the historic and cultural foundations of the Chickasaw Nation. Federal agencies are required to invite tribes’ input in the identification of significant irreplaceable prehistoric and historic properties of the United States that should be preserved. NHPA and NAGPRA require agencies to consult with tribes to protect graves and to return graves and grave objects to tribes that are determined to be culturally affiliated.