In a state where allegations of political corruption are nothing new, 12 impartial jurors can be found to serve in the trial of a former Chicago official accused of taking bribes, a federal judge has held.In a written opinion, U.S. District Judge Virginia M. Kendall denied John Bills’ motion to move his trial to federal court in Nevada.Bills, the city’s former managing deputy of transportation, is charged with steering the contract for the installation of Chicago’s red-light cameras to Redflex Traffic …