A federal judge issued a second 10-day restraining order Thursday that again blocks U.S. congressional efforts to obtain documents that a former investigator took with him when he quit a probe of the Iraq oil-for-food program. The U.N.-backed Independent Inquiry Committee agreed to the new delay after consulting with the two congressional committees which are seeking the documents. They earlier had failed to reach a deal under the first 10-day order issued May 9. Both came from a judge in Washington. The former investigator, Robert Parton, quit the probe in April, reportedly because he believed it ignored evidence critical of U.N. Secretary-General Kofi Annan. The chief of the probe, former U.S. Federal Reserve Chairman Paul Volcker, denies there was a cover-up.