S&P Global Ratings assigned its 'A' long-term rating to the city of Donna, Texas' proposed $7.74 million certificates of obligations. The outlook is stable. The certificates of obligations constitute a direct obligation of the city, payable from the proceeds of a continuing, direct annual ad valorem tax, within the limits prescribed by law, on all taxable property within its borders. The city plans to use the bond proceeds for city streets, water and sewer, public parks, and public works. Donna, in Hidalgo County, despite being a part of the McAllen-Edinburg-Mission metropolitan statistical area (MSA), has what we consider a very weak economy. The city serves as an access point to Mexico and completed an international toll bridge in 2010 that