...S&P Global Ratings assigned its '###' long-term rating to the Iowa Finance Authority's (IFA) 2022 series D, E, and F single-family mortgage bonds (mortgage-backed securities, or MBS, program). At the same time, S&P Global Ratings affirmed its '###' long-term rating and '###/A-1+' rating on debt outstanding under the authority's MBS program. The long-term rating reflects our opinion of the very strong credit quality of the single-family mortgage collateral. The outlook is stable. The authority will use the 2022 series D, E, and F bond proceeds, totaling approximately $98.4 million, to acquire Government National Mortgage Assn. (Ginnie Mae), Federal National Mortgage Assn. (Fannie Mae), or Federal Home Loan Mortgage Corp. (Freddie Mac)-guaranteed MBS, backed by pools of mortgage loans which have been or are expected to be made by participating lenders to qualified persons to finance single-family residential housing in Iowa and to finance down payment assistance loans. The 2022 series E bonds,...