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Obama quest for fast-track trade bill on ice in U.S. House

* Democratic, Republican opposition kills worker aid

* House Republican leaders hope to revive bill next week

* Setback could spark fresh round of horse-trading (Adds reaction from Japan's Economy minister)

By Krista Hughes and Richard Cowan

WASHINGTON, June 12 (Reuters) - A raging battle over President Barack Obama's request for "fast-track" authority central to improving U.S. ties with Asia resumes in the House of Representatives next week when lawmakers are expected to try to reverse Friday's defeat of linchpin trade legislation.

House Democrats disregarded Obama's personal pleas and teamed up with Republicans, for different reasons, to overwhelmingly defeat a program that helps American workers who lose their jobs as a result of trade deals.

Supporters were heartened, however, when the House narrowly approved a separate measure to give Obama "fast-track" authority to negotiate the Trans-Pacific Partnership (TPP) trade deal. But the legislation is stuck in the House because of the defeat Obama and House Speaker John Boehner suffered on the first vote.

Both measures are included in one bill and both need to be approved before the legislation can clear the House.

A House Republican aide told reporters Republican leaders hope to stage a vote again on Tuesday to pass the worker aid portion of the bill. That would allow the entire bill to be signed into law by Obama, but its chances were unclear.

In Japan on Saturday, Economy Minister Akira Amari held out hope the trade legislation could be revived.

"The fastest schedule for reaching a broad agreement at the ministerial level has become more difficult," Amari told a news conference hours after the vote in the U.S. House of Representatives. "We don't need to be too pessimistic. We'll closely watch the efforts in the U.S. Congress."

Obama, who made a last-ditch personal appeal to congressional Democrats to support the worker aid program, urged lawmakers to get behind the twin initiatives.

"New trade agreements should go hand in hand with support to American workers who've been harmed by trade in the past," he said in a statement, noting the program helps about 100,000 workers per year.

Republican Steve Scalise, a member of the House leadership team, said the president had to work with recalcitrant Democrats to get the numbers for the program.

"They took a hostage that they might realize now they can't afford to shoot," he said.

The worker aid program, which expires in September, drew heavy opposition from both parties, with 158 Republicans joining 144 Democrats in voting "no." The overall vote was 302-126 against.