WASHINGTON — Wall Street and Washington wrestled yesterday with how to shore up mortgage giants Fannie Mae and Freddie Mac, two troubled pillars of the economy whose failure would deal a devastating blow to the already crippled housing market.

As investors grew more convinced that only some type of government bailout could rescue the firms, Treasury Secretary Henry Paulson said the focus was to support the pair "in their current form" without a takeover.

The government was considering giving Fannie and Freddie access to the Fed's emergency lending program as one option to prop up the firms, said Sen. Christopher Dodd, D-Conn., citing conversations with Fed Chairman Ben Bernanke and Paulson.

A Fed spokeswoman said the central bank had not talked with Fannie and Freddie about the emergency lending program. The spokeswoman declined to discuss any other options being considered.

Both companies issued statements late yesterday calling their financial positions solid. Freddie Mac said it did not see an immediate need to raise fresh money, and said other options included cutting its annual shareholder dividend, which costs $650 million a year.

Investors drove Fannie and Freddie shares to 17-year lows before the stocks recovered somewhat. The turmoil, combined with a new high for oil prices, helped send the Dow Jones industrials briefly below 11,000 for the first time in nearly two years. The Dow finished down about 1 percent at 11,100.54.

Fannie and Freddie were created by the government to provide more Americans the chance to own a home by adding to the available cash banks can loan customers. Shares of both companies are publicly owned.

Their importance to the housing market and overall economy is hard to overstate: Fannie and Freddie either hold or back $5.3 trillion of mortgage debt, or about half the outstanding mortgages in the United States.

"Without them, our economy would collapse," Piper Jaffray analyst Robert P. Napoli said in a note to clients.

In the mortgage industry, the prospect of doing business without Fannie and Freddie is truly frightening.

"The cost of borrowing would go up dramatically," said Steve Habetz, president of Threshold Mortgage Co. in Westport, Conn. "We would be going back to dark ages where a homebuyer would be hoping that a local bank would (have enough resources) to make the loan that it will keep on its books."

Published reports suggested the government was considering taking over one or both of the companies and running them itself.

President Bush met with senior economic advisers and said Paulson had assured him that Paulson and Bernanke "will be working this issue very hard."

Wall Street sent the companies' stocks lower nonetheless. Freddie Mac shares were down 25 cents, or 3.1 percent, to $7.75. Fannie Mae shares were down $2.95, or 22.4 percent, to $10.25.

Analysts suggested the problems had as much to do with market perceptions than any fundamental change in the two companies' finances. One report from Citigroup titled "Fear Begets Fear" called the sell-off "overdone."

The government has several options that stop short of a dramatic takeover. The Federal Reserve could provide emergency loans, or take on either company's mortgage-backed securities in an effort to reassure the market.

Under a government takeover, operations would continue at Fannie or Freddie, but shareholders would probably see their investments erased, and the companies' ability to support the mortgage market could be reduced.

The mortgage giants could face a replay of the near-collapse in March of investment bank Bear Stearns Cos. A crisis of market confidence can make it difficult to raise day-to-day operating cash through routine debt sales.

The chief regulator of Fannie and Freddie, the Office of Federal Housing Enterprise Oversight, said on Thursday that the two companies were "adequately capitalized."

Congress created Fannie, the Federal National Mortgage Association in 1938 and Freddie, the Federal Home Loan Mortgage Corp., in 1970. They were designed to buy mortgages and bundle them into securities for sale to investors worldwide, making home ownership affordable for more Americans.

Congress is moving closer to completing a housing rescue package that would create a new regulator for Fannie and Freddie and tighten controls over them. The bills would also permanently raise the limit on the loans they can buy.