USDA Issues Interim Final COOL Rule   The U.S. Department of Agriculture (USDA) issued an interim final rule Monday for the mandatory country-of-origin labeling (COOL) program that will become effective on Sept. 30. It will be formally published in the Federal Register on Aug. 1, but the pdf document can be viewed online at the Federal Register at http://federalregister.gov/OFRUpload/OFRData/2008-17562_PI.pdf.