The Home Affordable Refinance Program (HARP) is a federal program of the United States, set up by the Federal Housing Finance Agency in March 2009, to help underwater and near-underwater homeowners refinance their mortgages. Unlike the Home Affordable Modification Program (HAMP), which assists homeowners who are in danger of foreclosure, this program benefits homeowners whose mortage payments are current, but who cannot refinance due to dropping home prices in the wake of the U.S.