1 of 3
Lauren Victoria Burke, Associated Press
Rep. Sander Levin, D-Mich., accompanied by fellow House Democrats, gestures during a news conference on Capitol Hill in Washington, Tuesday, June 16, 2016, to discuss opposition to the President Barack Obama's trade deal. Despite Obama's direct appeal, House Democrats voted overwhelmingly on Friday to reject a jobs retraining program because it was legislatively linked to fast track, which they want to kill. Both parties were asking Tuesday whether they could persuade enough colleagues to switch their votes and reverse Friday's outcome, but few were optimistic.

WASHINGTON — President Barack Obama and Republican leaders are thinking of returning to the Senate to salvage their imperiled trade agenda. It's testament to a crucial miscalculation they made months ago.

The White House and GOP leaders had assumed that congressional Democrats' eagerness to renew a job retraining program would trump their opposition to the "fast track" negotiating authority Obama seeks.

So they packaged both provisions into one bill. The Senate passed it, and then the House ambushed it.

House Democrats wanted so badly to kill fast track that they sacrificed the job training program for workers displaced by trade, which they had long supported. Pro-trade lawmakers couldn't unlink what they had linked, and no one has figured a way out of the jam.

Now Obama and his allies are considering something they had desperately hoped to avoid: revisiting trade legislation in the Senate, possibly after the House votes on a simplified fast track bill. It would give Senate opponents another chance to strangle the legislation with costly delays and other tactics.

Last week's House defeat caught veteran strategists by surprise. Patrick Griffin, a top legislative strategist in Bill Clinton's White House, said the original strategy looked smart.

"I thought it was queued up pretty well," Griffin said. "The real surprise was the power of the interest groups" opposed to fast track, he said, "and that not many Democrats wanted to take a tough vote" against those groups.

Fast track authority would let Obama propose trade agreements that Congress could reject or ratify, but not change.

Unions and liberals strongly oppose it, saying free-trade pacts send U.S. jobs overseas. The president says U.S. products must reach wider markets.

He is pushing for a landmark deal with 11 other Pacific Rim nations. Democrats and Republicans agree it can't proceed unless Obama gets fast track authority, which previous presidents have enjoyed.

Congressional officials said Tuesday that Republican House Speaker John Boehner and Republican Senate Majority Leader Mitch McConnell were likely to split the stalled bill into two parts. The idea is that Republicans will mainly carry fast track, and Democrats will mainly carry the training program, known as Trade Adjustment Assistance, or TAA.

Over the years, the two initiatives were often twinned, to build bipartisan support. That strategy collapsed last week in the House.

Lawmakers said other options remain possible. And they said the Senate-restart plan would face serious hurdles in both chambers.

For one thing, most House members voted against TAA last week, and nearly half voted against fast track. Politicians hate to switch votes on tough issues, said Rep. Phil Roe, R-Tenn.

If they do so and then face a primary challenger, he said, "I can promise you your opponent is going to be all over that." Lawmakers can explain their switches, Roe said, but in a campaign, "if you're explaining, you're losing."

Still, Democratic Rep. John B. Larson of Connecticut — who supports TAA and opposes fast track — said it makes sense to split them into separate bills that can seek different sources of support. "I don't know why they combined them in the first place," Larson said.

Anti-fast-track lawmakers were awaiting more details on the possible new approach.

Sen. Sherrod Brown, D-Ohio, said he was hearing "a bunch of rumors." He said the trade legislation is stymied because Obama, GOP leaders and big corporations "are trying to jam something through Congress that the public doesn't want." He said he didn't know if Senate opponents could block it.

There clearly was urgency behind Tuesday's rescue effort, as pro-trade Republicans and the Obama administration desperately want to salvage a sweeping international trade pact this year. Any delay could threaten completion of the 12-nation Trans-Pacific Partnership, which officials hope can be signed at a November summit in the Philippines.

If one house doesn't act until late July, when Congress' August break looms, the other chamber couldn't act until the fall. That could push final approval of any trade deal into December or January, when the U.S. presidential race will be hurtling toward the first caucuses and primaries.

"It does get harder to complete a trade agreement in a presidential year," said Matthew Goodman, a former Asia and economic specialist at the White House during Obama's first term.

Failure to give Obama fast track authority would raise serious doubts in Asia about U.S. credibility and staying power in a part of the world where Obama has been trying to boost U.S. influence, Goodman said.

"This would be a devastating blow not only to President Obama's legacy but also to broader U.S. interests in the Asia-Pacific region," said Goodman, now a senior adviser at the Center for Strategic and International Studies.

Associated Press writers David Espo and Erica Werner contributed to this report.