From the Document: "A variety of federal government, state government, and private programs support historic preservation in the United States. This report provides an overview of the federal role in historic preservation, including background and funding information for some of the major preservation grants, programs, and entities authorized by Congress. Starting in the early 20th century, Congress has passed several laws that have established a framework for federal historic preservation activities. The most comprehensive of these statutes is the National Historic Preservation Act of 1966 (NHPA; P.L. 89-665). NHPA created a grants program for state historic preservation, established the federal National Register of Historic Places (NRHP) and the procedures by which historic properties are placed on the Register, funded the National Trust for Historic Preservation (NTHP), established the Advisory Council on Historic Preservation (ACHP), and designated a process for federal agencies to follow when their projects may affect a historic property. Congress has amended and expanded NHPA multiple times since its passage, most recently in 2016."
CRS Report for Congress, R45800
Congressional Research Service: https://crsreports.congress.gov/