WASHINGTON — The independent federal agency that administers Fannie Mae and Freddie Mac said on Tuesday that it would not let the mortgage companies offer debt forgiveness to borrowers, again rejecting the entreaties of the Obama administration. Scott Eells/Bloomberg News Edward DeMarco of the Federal Housing Finance Agency. Add to Portfolio Federal Home Loan Mortgage Corp (Freddie Mac) Federal National Mortgage Assn (Fannie Mae) Go to your Portfolio » Enlarge This Image Patrick Fallon/Bloomberg News The Neighborhood Assistance Corporation of America had an event in Los Angeles this year to help delinquent homeowners. The Federal Housing Finance Agency said it had concluded after...