Bond rating agencies are upgrading their outlook on Nashville and its airport even as state lawmakers take aim at both in the purported interest of improving their governance.

Kroll Rating Agency last week upgraded the city of Nashville from AA to AA+, one step below a perfect AAA rating. Meanwhile, Standard & Poor’s raised its long-term and underlying rating for the Metropolitan Nashville Airport Authority from A+ to AA-, with a stable financial outlook.

Republican lawmakers are mulling bills to cut the size of the Metro Nashville Council from 40 voting members to 20 and replace mayoral appointments to the Airport Authority with picks by the governor and the House and Senate speakers. Separate measures would limit how Nashville could spend privilege taxes collected at the city’s convention center and take over appointments to the city’s sports authority.