CHATTANOOGA — A federal judge sentenced the first government official convicted at trial in the FBI’s Tennessee Waltz bribery sting to three years in prison Tuesday. Former Hamilton County Commissioner William Cotton, 58, was ordered to report to jail by June 5. A jury convicted Cotton in February of conspiring with a lobbyist to take bribes totaling $4,750. Cotton faced a maximum possible penalty of 40 years in prison and a $500,000 fine. Republican state Rep. Chris Newton of Cleveland reported to prison three weeks ago to serve his one-year sentence. Newton pleaded guilty to accepting a bribe in the...