NEW YORK (S&P Global Ratings) May 17, 2016--S&P Global Ratings assigned its 'AA+' rating to Minnesota Housing Finance Agency's (MHFA) series 2016A, B, and C residential housing finance bonds. At the same time, S&P Global Ratings affirmed its 'AA+' issuer credit rating (ICR) on MHFA, and its 'AA+' and 'AA+/A-1+' ratings on the agency's related debt. The outlook on all issues is stable. "The rating reflects our view of the agency's general obligation (GO) pledge backing the bonds," said S&P Global credit analyst Ki Beom Park, "and very strong residential housing assets that comprise whole loans and a growing portfolio of mortgage-backed securities." Other factors include MHFA's: Very strong performance of its residential housing loan portfolio, evidenced by improved delinquency