NEW YORK--(BUSINESS WIRE)--Kroll Bond Rating Agency (KBRA) has assigned a long-term rating of AA with a stable outlook to the State of Wisconsin’s $89.96 million General Obligation Bonds of 2015, Series B. KBRA also affirms the long-term rating of AA with a stable outlook on the State’s outstanding General Obligation Bonds, excluding bonds backed by a letter of credit or liquidity facility, unless otherwise noted. As of June 1, 2015, Wisconsin has $7.6 billion outstanding General Obligation deb