KCBS' Barbara Taylor questions City's attempt to hold mortgage lenders accountable for loans already done, especially if many are packaged and sold on the secondary markets. Paul Leonard of the Center for Responsible Lending responds. *** PRESS RELEASE *** MAYOR NEWSOM AND ASSESSOR-RECORDER TING CALL ON BANKS TO HELP PREVENT FORECLOSURES AND SUBPRIME MORTGAGE DEFAULTS San Francisco, CA -- In an effort to keep San Francisco homeowners in their homes, Mayor Gavin Newsom, Assessor-Recorder Phil Ting, Supervisor Sophie Maxwell, and Supervisor Tom Ammiano today announced that they have asked major financial institutions to sign an agreement outlining specific measures aimed at tackling the increasing number of foreclosures and mortgage defaults in San Francisco. City officials have given financial institutions until November 30 to respond to the request. "San Francisco residents should not have to suffer the same fate as countless other families who have lost their homes across...