DETROIT -- Congressional negotiators continue hammering out legislation that would dole out billions to automakers -- but promises to yank back the money if a government-run board and overseer decided the companies weren't taking steps to overhaul themselves.

The plan would draw the emergency aid from an existing loan program meant to help the automakers build fuel-efficient vehicles. The size of the package hasn't been finalized, but it is expected to be about $15 billion, several congressional aides said.

It would create a board composed of Cabinet secretaries from the departments of Treasury, Energy, Labor, Commerce and Transportation plus the Environmental Protection Agency administrator to oversee a broad auto industry restructuring. A congressional aide outlined the emerging measure on condition of anonymity because it is not yet completed.

In return for the money, the carmakers would have to agree to terms similar to those placed on banks that receive funds under the $700 billion Wall Street bailout: to limit their top executives' pay packages, cease paying dividends, give the government a chunk of future gains and guarantee that taxpayers would be reimbursed before any other shareholders, the aide said.

The bill under discussion would place the special investigator overseeing the bank rescue in charge of keeping tabs on the auto bailout.

The White House and Democratic congressional leaders are narrowing their differences over the auto bailout, but had yet to agree on specific legislative details, officials said.

Sen. Chris Dodd, D-Conn., chairman of the Banking Committee, said Sunday that General Motors Corp.'s chief executive, Rick Wagoner, "has to move on" as part of a government-run restructuring.

"I think you have got to consider new leadership," Dodd said on CBS' "Face the Nation."

On Monday, Dodd said that "it's not my job to hire and fire, but what I suggest is, you need to have new teams in place here ... if you're going to convince the American public" that the financial relief plan is necessary and justified.

Dodd also said on ABC's "Good Morning America" Monday that figures showing over a half-million people lost their jobs in November amounts to a "game-changer" in the debate over an aid package.

UAW President Ron Gettelfinger, appearing on NBC's "Today" show, said his union is ready to go back to the bargaining table to help the auto companies, but he also said that workers should not be made "scapegoats" for their problems.

Criticized for staying on the sidelines until now, President-elect Barack Obama voiced support Sunday for the bailout legislation being drafted in Congress. He accused car industry executives of a persistent "head-in-the sand approach" to long-festering problems.

In an appearance on NBC's "Meet the Press," Obama said Congress was doing "the exact right thing" in drafting legislation that "holds the auto industry's feet to the fire" at the same time it tries to prevent its demise.

GM spokesman Steve Harris said the company appreciates Dodd's support for the loans, but added, "GM employees, dealers, suppliers and the GM board of directors feel strongly that Rick is the right guy to lead GM through this incredibly difficult and challenging time."

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