The Democratic congresswoman was to go on trial in the House Monday on charges she used her political influence to help bail out a bank in which her husband owned stock.
But the ethics panel delayed the trial after the discovery of potential new evidence: an e-mail, written by her chief of staff, which says Waters was closely watching bailout legislation, but which does not mention the bank tied to her husband.
Waters, who claims she is innocent, has been calling for the trial to proceed for months.