Committee Demands Stewart's Files Tue Aug 6, 7:46 PM ET By THERESA AGOVINO, AP Business Writer NEW YORK (AP) - Congressional investigators asked for additional records from Martha Stewart on Tuesday, as they widened the probe into her sale of shares of ImClone shares a day before they plummeted. The House Energy and Commerce Committee requested some of Stewart's e-mails, records from her business manager and additional information on her phone numbers. In a letter to Stewart's lawyer Tuesday, committee chairman Billy Tauzin and James D. Greenwood, chairman of the Subcommittee on Oversight and Investigations, again requested an interview with...