The Federal Housing Finance Agency is considering a sale of modified loans in the portfolios of Fannie Mae and Freddie Mac. Edward DeMarco, acting director of the agency that oversees the government-sponsored enterprises, says such a sale would be part of the FHFA’s mandate to reduce the size of the lenders’ portfolios at a rate of 10% a year. Fannie Mae and Freddie Mac together hold more than 650,000 modified loans.