...S&P Global Ratings assigned its '###' long-term rating to the Colorado Housing & Finance Authority's (CHFA) 2019 series E single-family mortgage class I bonds. In addition, CHFA plans to issue class I 2019 series D adjustable rate single-family mortgage bonds, secured by the open indenture and a liquidity facility from Royal Bank of Canada, which we will rate separately from this transaction. Finally, we affirmed our '###' and '##' long-term ratings and various short-term ratings on all existing class I and class II bonds, respectively, under the indenture. Where applicable, the outlook is stable. The ratings reflect our opinion of the indenture's following strengths: + Substantial overcollateralization, as evidenced by the 123.2% and 109.7% asset-to-liability parities on the class I and class II bonds, respectively, according to the Nov. 1, 2018 disclosure report; + A loan portfolio of very strong credit quality, with 70% of the total existing loan balance guaranteed by the U.S. government,...