...DALLAS (S&P Global Ratings) Jan. 22, 2019--S&P Global Ratings raised its rating on Metropolitan Government of Nashville & Davidson County (Metro), Tenn.'s series 2010A-1 and A-2 revenue bonds, issued by the Metro Convention Center Authority, to 'A+' from 'A'. The outlook is stable. "We base the upgrade on the application of our 'Priority-Lien Tax Revenue Debt' criteria," said S&P Global Ratings credit analyst Kristin Button. We applied the Priority-Lien Debt criteria (published Oct. 22, 2018) to the debt factors in both the strength and stability of the pledged revenues as well as the general credit quality of the municipality where taxes are distributed and collected (the obligor's creditworthiness, or OC). The debt is secured by tourism tax revenues that include sales tax increments in the tourism development zone, a car rental tax, a 3% hotel tax, a $2 per unit hotel tax, sales tax for the convention center project, and miscellaneous transportation tax. The 'A+' rating reflects our opinion...