**FILE** Stephen Cooper, Enron's interim chief executive, participates in a bankruptcy seminar in this April 30, 2003 file photo in Houston. American Home Mortgage Corp. filed for bankruptcy protection on Monday, Aug. 6, 2007, the latest casualty of a mortgage industry that has plunged into distress. The company hired Stephen F. Cooper to be chief restructuring officer. Cooper was also chief restructuring officer for Enron Corp.(AP Photo/Pat Sullivan, file)