Now Andersen, whose audits of Enron's books disclosed none of the convoluted and questionable practices that brought Enron down, has asked Mr. Volcker to oversee its efforts to raise standards.

"The audit did not disclose any substantive violations" of election laws, a committee lawyer, Donald F. McGahn II, said.

Very few formal enforcement actions were taken against polluters in those states when they significantly violated the terms of their outdated permits, an audit disclosed.

Baby Superstore's Shares Plunge Baby Superstore said an audit disclosed that it might have overstated its cash reserves for fiscal 1996.

Later audits disclosed scores of botched projects financed with hundreds of millions of dollars in international loans.

In California, for example, recent audits disclosed that $434,000 were used improperly to send children hundreds of miles from their homes to an isolated detention camp in the remote Nevada desert.

A 1986 audit of the bus company, which transports many of the handicapped children to special schools, disclosed that more than half the buses had a history of mechanical breakdowns.

A forensic audit conducted by Schneiderman's office also disclosed that in 2010, the year of the earthquake in Haiti, the organization had spent over $9 million - half of it on travel alone.

The audit did not disclose the names of the companies and consultants in these five cases or the nature of the offenses.

An earlier audit by PriceWaterhouseCoopers disclosed what Mr. Hands of Nomura said was "new information about the costs and future liabilities of the dome," suggesting that its finances had been run haphazardly.