Standard&Poor's Ratings Services revised its rating on Minnesota Housing Finance Agency's (MHFA) single family mortgage revenue bonds series 1997D to 'AA+', and the Minnesota Housing Finance Agency's rental housing bonds series 1995C-2, 1995D, and 1997A to 'AA+', reflecting the addition of Minnesota Housing Finance Agency's Standard&Poor's underlying rating (SPUR) (AA+/Positive). Standard&Poor's also affirmed its 'AA+' rating on Minnesota Housing Finance Agency's (MHFA) rental housing series 1998B and the single-family mortgage revenue bonds series 2001A and B. An insurance policy provided by National Public Finance Guarantee Corp (A/Developing) supports the rental housing bonds series 1995D and the single family mortgage revenue bonds series 2001 A and B. An insurance policy provided by AMBAC Assurance Corp. (CC/Negative)