A senior administration official warned last night that the ultimate cost to taxpayers has not been determined. Several of the programs have not been finalized, and most are designed to ultimately return money to taxpayers…

A second initiative will broaden the scope of a Federal Reserve program aimed at unclogging the markets for auto, student and other consumer loans. That initiative may expand to as much as $1 trillion, using $100 billion from the Treasury’s rescue funds, and include aid for commercial real estate markets.