TORONTO (Standard&Poor's) Dec. 14, 2010--Standard&Poor's Ratings Services today said it assigned its 'A-' rating to Genworth MI Canada Inc.'s (TSX: MIC) C$150 million 4.59% senior notes maturing December 2015. The counterparty credit rating on MIC is 'A-'. The outlook is positive. The rating on the senior notes reflects the 'A-' counterparty credit rating on MIC. The C$150 million issuance is MIC's second transaction to raise senior debt out of its existing shelf filed on May 7, 2010. Its initial transaction of C$275 million, 5.68% senior debentures maturing June 15, 2020, earlier this year introduced leverage to its capital base. It is our understanding that the company expects to use the proceeds from the current debt issuance