Federal Agencies:

HUD:
The US Department of Housing & Urban Development (HUD) mission is to increase homeownership, support community development and increase access to affordable housing free from discrimination.

FHA:
The Federal Housing Administration, generally known as "FHA", provides mortgage insurance on loans made by FHA-approved lenders throughout the United States and its territories. FHA insures mortgages on single family and multifamily homes including manufactured homes and hospitals.

VA:
The VA Loan Guaranty Service is the organization within the Veterans Benefits Administration charged with the responsibility of administering the home loan program. Their Mission is to help veterans and active duty personnel purchase and retain homes in recognition of their service to the Nation.