Financial Services Chairman Barney Frank, the feisty Democrat who has been leading negotiations with Paulson, reacted angrily, saying Republicans had waited until the last moment to present their proposal.

McCain, who dramatically announced Wednesday that he was suspending his campaign to deal with the economic crisis, stayed silent for most of the session and spoke only briefly to voice general principles for a rescue plan.

After the session, Paulson, hoping to prevent any chance for agreement from being torpedoed, pleaded with Democratic leaders not to publicly disclose how poorly the session had gone, said three people familiar with the episode. Frank and House Speaker Nancy Pelosi responded angrily, and Paulson, in an attempt to lighten the mood, got down on one knee, said the sources who spoke on condition of anonymity, like the others, because the conversations were private.

Weary congressional negotiators then resumed working with Paulson into the night in an effort to revive or rework the proposal that Bush said must be quickly approved by Congress to stave off "a long and painful recession." They gave up after 10 p.m. EDT, more than an hour after the lone House Republican involved, Rep. Spencer Bachus of Alabama, left the room.

Talks were to resume Friday morning on the effort to bail out failing financial institutions and restart the flow of credit that has begun to starve the national economy.

The Bush administration plan's centerpiece remained for the government to buy the toxic, mortgage-based assets of shaky financial institutions in a bid to keep them from going under and setting off a cascade of ruinous events, including wiped-out retirement savings, rising home foreclosures, closed businesses and lost jobs.

The earlier bipartisan accord establishing principles and important details would have given the Bush administration just a fraction of the money it wanted up front, subjecting half the $700 billion total to a congressional veto. The Treasury secretary would get $250 billion immediately and could have an additional $100 billion if he certified it was needed, an approach designed to give lawmakers a stronger hand in controlling the unprecedented rescue.

The Bush administration had already agreed to several concessions based on demands from the right and left, including that the government take equity in companies helped by the bailout and put rules in place to limit excessive compensation of their executives, according to a draft of the outline obtained by The Associated Press.