A federal judge ordered Wisconsin transportation officials Thursday to immediately produce documents clearly explaining how people who lack a photo ID can obtain voting credentials, and to perform checks to ensure field workers are giving applicants correct information about the process, AP reported. U.S. District Judge James Peterson refused to invalidate the state's entire voter ID law, as a liberal advocacy group had asked. He said he lacks the authority to do so because the 7th U.S. Circuit Court of Appeals has upheld it, and he expressed reluctance to make sweeping changes so close to the Nov. 8 election. Peterson's order came in the wake of media reports showing Division of Motor Vehicles workers have been giving credential applicants inaccurate information about the process. Liberal advocacy group One Wisconsin Institute filed a motion with Peterson earlier this month alleging that the misinformation violated his July 29 order that the DOT must clarify a process that he labeled "a wretched failure."