OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has assigned a Long-Term Issue Credit Rating of “aa-” to the $350 million 4.850% 60-year surplus notes recently issued by Guardian Life Insurance Company of America (Guardian) (New York, NY). The outlook assigned to the Credit Rating (rating) is stable. A.M. Best expects Guardian to utilize the proceeds of the surplus notes for general corporate purposes, which may include the repayment or redemption of existing indebtedness or other obligations. The ne