SAN FRANCISCO (Standard&Poor's) April 19, 2013--Standard&Poor's Ratings Services assigned its 'AA' rating to Wisconsin's $434.5 million general obligation (GO) bonds series 2013A. In addition, we affirmed our 'AA' rating on the state's approximately $8.01 billion in existing GO debt. We also affirmed our 'AA-' rating on the state's $3.36 billion in existing appropriation bonds and master lease certificates of participation, as well as our 'A' rating on the state's moral obligation-backed debt. The outlook on all ratings is stable. The 'AA' rating on Wisconsin's GO bonds reflects our view of the state's: Strong government framework with a constitutional balanced-budget requirement and a statutory provision that gives GO debt service first claim on state revenue; Demonstrated ability