Edwards lawyers seek to limit testimony of aide Feb 16 03:47 PM US/Eastern RALEIGH, N.C. (AP) - Lawyers for John Edwards have asked a judge to limit the testimony of longtime aide Andrew Young at the former presidential candidate's upcoming campaign finance trial. Edwards' lawyers and prosecutors submitted court filings Wednesday over expected testimony from Young about conversations he had with heiress Rachel "Bunny" Mellon and campaign finance chairman Fred Baron. The conversations regarded money used to help hide Edwards' pregnant mistress as he sought election to the White House. Defense lawyers said Young's testimony would amount to hearsay, since Baron is dead and the 101-year-old Mellon is too frail to testify at trial. Prosecutors contend that Young's testimony is permissible. Edwards has pleaded not guilty to charges related to campaign finance violations. His trial has been delayed while he seeks treatment for a heart condition.