Gov. Nathan Deal signed a bill Tuesday that will allow for the construction of a statue to the Rev. Dr. Martin Luther King Jr. on state Capitol grounds. Immediately afterward, he vetoed a bill governing how private companies oversee Georgia probationers. His aides said the private probation bill, which was the subject of a scathing state audit, is the only major bill Deal will be vetoing. Critics say the measure would have allowed private probation companies to conceal details of their dealings from the public.