We are affirming our 'A+' financial strength rating (FSR) on BMO Life Assurance Co. based on its status as a "core" subsidiary of Bank of Montreal. We are removing the rating from CreditWatch with negative implications. Subsequent to our review, we are withdrawing the rating at the company's request. TORONTO (Standard&Poor's) May 6, 2013--Standard&Poor's Ratings Services today said it affirmed its 'A+' financial strength rating (FSR) on BMO Life Assurance Co. (BMO Life). At the same time, Standard&Poor's removed the rating from CreditWatch, where it had been placed with negative implications. The outlook is stable. Subsequent to our review, Standard&Poor's withdrew the FSR at the company's request. "The FSR on BMO Life