A.M. Best Removes from Under Review and Takes Various Credit Rating Actions on Insurance Subsidiaries of Nassau Reinsurance Group Holdings, L.P. A.M. Best Removes from Under Review and Takes Various Credit Rating Actions on Insurance Subsidiaries of Nassau Reinsurance Group Holdings, L.P. A.M. Best has removed from under review with developing implications and affirmed the Financial Strength Rating of B and the Long-Term Issuer Credit Ratings of “bb+” of the key life/health subsidiaries of The Phoenix Companies, Inc. . Additionally, the Long-Term ICR of “b” of Phoenix and its existing Long-Term Issue Credit Ratings have been removed from under review with developing implications and affirmed.