Lauren Victoria Burke, File, Associated Press
In this March 24, 2015 file photo, House Majority Leader Kevin McCarthy of Calif. during news conference on Capitol Hill in Washington. McCarthy says Congress must find a way to pass President Barack Obama's trade agenda. But he acknowledged there's no obvious pathway for now.

WASHINGTON — The House majority leader said Monday that Congress must find a way to pass President Barack Obama's trade agenda. But he acknowledged there's no obvious pathway in the wake of Friday's stunning defeat for the president, engineered chiefly by fellow Democrats.

Republican Rep. Kevin McCarthy of California told reporters "there are many different options" to revive the trade package the House derailed last week. He said a new vote could come as early as this week, but Republican leaders first must survey the political and legislative landscapes.

Obama seeks "fast track" negotiating authority, which previous presidents have had. It allows the president to send Congress proposed trade agreements that lawmakers can ratify or reject, but not change. Obama says U.S. products must reach wider markets.

But labor unions and many liberals adamantly oppose free-trade deals. They say the pacts ship U.S. jobs overseas and reward nations with weak environmental and workplace standards.

To derail fast track, scores of Democrats voted Friday to kill a program they've embraced for years, which gives federal aid to workers displaced by international trade. The Senate had combined fast track and the aid program into one bill, enabling House Democrats to bring down the entire package by killing the aid program, which most Republicans oppose to begin with.

McCarthy and others have proposed several possible ways to revive the package, although all carry serious challenges.

McCarthy said the best solution is for House Democrats to reverse course and approve the entire legislative package — including fast track and the displaced worker aid — and let Obama sign it into law. Many Democrats say that's unlikely.

Another possibility is to try to pass fast track alone, perhaps with nearly 30 Democratic votes and enough Republicans to supply the rest. But that would require the legislation to go back to the Senate, where the package narrowly passed after a lengthy and bitter struggle. Obama's allies are extremely reluctant to give Senate opponents another chance to kill it.

McCarthy didn't rule out that possibility, however. "It would have to go back to the Senate," he said, if the House approves a fast track bill that strips out the worker aid program.

Republicans historically have supported free-trade agreements, while Democrats have grown increasingly hostile. But on Friday, 54 House Republicans voted against Obama's bid for fast track authority even when the worker aid program — seen by many as a sop to the unions — was not attached.

The congressional impasse jeopardizes hopes to complete the 12-nation Trans-Pacific Partnership that the United States and 11 other nations have been negotiating for years.