Today the Federal Housing Finance Agency (FHFA) approved Fannie Mae's and Freddie Mac's Underserved Markets Plans for 2018-2020. Under the Duty to Serve (DTS) program, the FHFA required each Enterprise to adopt a three-year Underserved Markets Plan that aims to increase the liquidity of mortgage financing to families with very low to moderate incomes in three underserved markets: rural housing; manufactured housing; and affordable housing preservation markets.