OVERVIEW American Express Credit Account Master Trust's certificate issuances are ABS transactions backed by a pool of receivables generated by American Express credit card accounts and pay-over-time revolving credit features associated with charge card accounts that are owned by American Express National Bank. We assigned our ratings to the class A and B certificates from series 2018-8 and 2018-9. The ratings reflect our view of the transaction's credit support, underlying payment structure and cash flow mechanics, and the legal structure, among other factors. DALLAS (S&P Global Ratings) Sept. 24, 2018--S&P Global Ratings today assigned its ratings to American Express Credit Account Master Trust's series 2018-8 and 2018-9 certificates, respectively (see list). The certificate issuances are asset-backed securities (ABS) transactions backed