OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has assigned a Financial Strength Rating (FSR) of A- (Excellent) and a Long-Term Issuer Credit Rating (Long-Term ICR) of “a-” to NASW Risk Retention Group, Inc. (NASW RRG) (Washington D.C.). The outlook assigned to these Credit Ratings (ratings) is stable. Concurrently, A.M. Best has affirmed the FSR of A- (Excellent) and the Long-Term ICR of “a-” of NASW Insurance Company (NASWIC) (Washington D.C.). The outlook of these ratings is stable. NASW RRG and