The Housing and Economic Recovery Act of 2008 established a duty for Fannie Mae and Freddie Mac to serve three specified underserved markets–manufactured housing, affordable housing preservation and rural housing–by increasing liquidity of mortgage investments and improving distribution of investment capital available for mortgage financing for very low-, low- and moderate-income families in those markets. Under the Duty to Serve regulation, Fannie Mae and Freddie Mac must prepare an Underserved Markets Plan (Plan) describing the specific activities and, objectives it will undertake to fulfill its Duty to Serve obligations in each underserved market over a three-year period.