The former Chairman and Chief Executive Enron has refused to answer questions at a Senate hearing on the collapse of his firm. Kenneth Lay cited his constitutional right against self-incrimination.
In opening statements, several of the senators accused Mr Lay of running a sham company and referred to the anger felt at the substantial financial losses suffered by investors and employees.
The energy trader's bankruptcy, the largest in US history, threw thousands out of work, wiping out life-savings, and left shareholders holding worthless stock.
