Standard&Poor's Ratings Services affirmed its 'AA+' long-term rating on Maricopa County Industrial Development Authority, Ariz.'s series 2000C taxable single-family mortgage revenue bonds (mortgage-backed securities program). The outlook is negative. The bonds are secured by Ginnie Mae mortgage-backed securities and Fannie Mae pass-through certificates. The rating continues to reflect our views of: The sufficiency of revenues from mortgage debt service payments and investment earnings to pay full and timely debt service on the bonds until maturity; The high credit quality of the Ginnie Mae mortgage-backed securities and Fannie Mae pass-through certificates, considered to be 'AA+' eligible; The investments held in Invesco Money Market Fund (AAAm); and The 100.03% asset-to-liability ratio as of March 1, 2013. The rating also reflects