...SAN FRANCISCO (S&P Global Ratings) March 31, 2017--S&P Global Ratings revised its outlook to stable from negative on King County, Wash's outstanding debt. At the same time, S&P Global Ratings affirmed its: + '###' long-term rating and underlying rating (SPUR) on King County's existing GO bonds; + '###' long-term rating on King County Housing Authority's (KCHA) existing bonds, which are backed by a contingent loan agreement with the county; + '###' long-term rating on certain county general obligation (GO) bonds that are also backed by a first-lien pledge of sales tax revenues; + '##+' long-term rating and SPUR on the county's appropriation obligations; and + '###/A-1+' rating on certain county GO debt that is also backed by a second lien on sewer revenues, with the short-term rating based on the State Street Bank & Trust Co. short-term rating as liquidity provider. "The revision back to stable reflects an improvement in our view of the county's flexibility to very strong from strong, driven...