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U.S. Department of the Interior: An Overview (CRS Report for Congress)

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Release Date Revised June 23, 2021
Report Number R45480
Report Type Report
Authors Mark K. DeSantis
Source Agency Congressional Research Service
Older Revisions
  • Premium   Jan. 31, 2019 (31 pages, $24.95) add
Summary:

The U.S. Department of the Interior (DOI) is a federal executive department responsible for the conservation and administration of the public lands and mineral estate of the United States. DOI describes its mission as protecting and managing the nation’s natural resources and cultural heritage for the benefit of the American people; providing scientific and scholarly information about those resources and natural hazards; and exercising the nation’s trust responsibilities and special commitments to American Indians, Alaska Natives, and island territories under U.S. administration. As part of its responsibilities, DOI oversees and fosters the use of more than 480 million acres of public lands, 700 million acres of subsurface minerals, and 1.7 billion acres of the outer continental shelf. Each year, Congress deliberates legislation that could affect DOI’s management of this vast federal estate. As a result, understanding the roles and responsibilities of DOI’s various components and offices is valuable when crafting legislation that affects the department’s operations and ability to fulfill its mission. DOI primarily implements its responsibilities and mission through nine technical bureaus that make up more than 80% of the agency’s workforce. These technical bureaus are the Bureau of Indian Affairs (BIA), Bureau of Land Management (BLM), Bureau of Ocean Energy Management (BOEM), Bureau of Reclamation (Reclamation), Bureau of Safety and Environmental Enforcement (BSEE), National Park Service (NPS), Office of Surface Mining Reclamation and Enforcement (OSMRE), U.S. Fish and Wildlife Service (FWS), and U.S. Geological Survey (USGS). Each of these bureaus has a unique mission and set of responsibilities, as well as a distinct organizational structure that serves to meet its functional duties. In addition to these technical bureaus, DOI has multiple departmental offices, which provide leadership, coordination, and services to DOI’s various bureaus and programs. As of June 2018, DOI employed a staff of 69,563 nationwide across its bureaus and offices. However, total DOI employment figures fluctuate throughout the year, as some bureaus rely on seasonal and part-time staff, increasing staff totals during the summer months. The Office of Personnel Management (OPM) reports the average total DOI employment as 65,350 for the four reporting periods from September 2017 to June 2018. The largest bureau within DOI based on number of staff is NPS, which averaged close to 20,000 staff over the same time period— more than twice the size of the second-largest bureau, BLM. The smallest technical bureau by employment is OSMRE, which averaged just over 400 employees. Approximately 10% of all DOI staff are within the District of Columbia core-based statistical area (CBSA), which includes the District of Columbia and selected counties in Maryland, Virginia, and West Virginia. Congress provides discretionary appropriations for DOI through two annual appropriations bills: the Interior, Environment, and Related Agencies bill and the Energy and Water appropriations bill. Enacted discretionary appropriations for FY2018 totaled $14.6 billion. DOI also received $566 million in supplemental emergency appropriations in FY2018, for a total of $15.2 billion in discretionary appropriations for FY2018. The organizational structure of DOI is subject to continual congressional oversight and executive branch examination. In 2017 and 2018, President Trump and then-Secretary of the Interior Ryan Zinke submitted reorganization plans for the department and its bureaus. These plans put forth several recommendations, including the consolidation and transfer of most functions of the Army Corps of Engineers Civil Works Division to DOI, the merger of the Department of Commerce’s National Marine Fisheries Service with FWS, and the creation of 12 “Unified Regional Boundaries” across DOI’s various bureaus.