Department of Housing and Urban Development The Department of Housing and Urban Development (HUD) is the federal agency responsible for national policies and programs that address America's housing needs, that improve and develop the nation's communities, and that enforce fair housing laws. The Department plays a major role in supporting homeownership for lower- and moderate-income families through its mortgage insurance and rent subsidy programs. Offices within HUD include the Federal Housing Administration, which provides mortgage and loan insurance; the Office of Fair Housing and Equal Opportunity, which ensures all Americans equal access to the housing of their choice; and the Community Development Block Grant Program, which helps communities with economic development, job opportunities, and housing rehabilitation. HUD also administers public housing and homeless assistance. The Secretary of Housing and Urban Development oversees approximately 9,000 employees on a budget of approximately $40 billion. Department of the Interior The Department of the Interior (DOI) is the nation's principal conservation agency. Its mission is to protect America's natural resources, offer recreation opportunities, conduct scientific research, conserve and protect fish and wildlife, and honor our trust responsibilities to American Indians, Alaskan Natives, and our responsibilities to island communities. DOI manages 500 million acres of surface land, or about one-fifth of the land in the United States, and manages hundreds of dams and reservoirs. Agencies within the DOI include the Bureau of Indian Affairs, the Minerals Management Service, and the U.S. Geological Survey. The DOI manages the national parks and is tasked with protecting endangered species. The Secretary of the Interior oversees about 70,000 employees and 200,000 volunteers on a budget of approximately $16 billion. Every year it raises billions in revenue from energy, mineral, grazing, and timber leases, as well as recreational permits and land sales.