Ariz. Rev. Stat. § 20-551
C. An insurer may invest or deposit its funds in any deposit, account or obligation of a foreign bank that has been determined by the securities valuation office of the national association of insurance commissioners to meet the credit standards for issuing letters of credit in support of the liability of a reinsurer to a ceding insurer or has demonstrated to the director that it meets or exceeds both the following standards:
2. Either of the following: