(NYSE:AIZ) OLDWICK, N.J.--(BUSINESS WIRE)-- #insurance--AM Best has affirmed the Financial Strength Rating (FSR) of A+ (Superior) and the Long-Term Issuer Credit Ratings (Long-Term ICR) of “aa-” (Superior) of the U.S. property/casualty (P/C) subsidiaries of Assurant, Inc. (Assurant) (headquartered in Atlanta, GA) [NYSE: AIZ]. These companies are collectively referred to as Assurant P&C Group (Assurant P&C). At the same time, AM Best has affirmed the Long-Term ICR of “a-” (Excellent), all associated Long-Term I