Senate Republicans and Democrats Wednesday struggled to secure a deal on a "Fast Track" trade bill that would give President Obama expedited powers to sign off on international trade pacts.

Senate Majority Leader Mitch McConnell, R-Ky., said "the door is open" to Democrats who want to work on a compromise.

The bill stalled Tuesday after Democrats blocked it from moving to the floor for debate. Democrats later offered to lift their demand that the bill include a provision to curb currency manipulation by trade-pact countries.

"Talks are ongoing," a Republican leadership aide told the Washington Examiner.

House Republican leaders Wednesday criticized Senate Democrats for voting against the trade bill, despite intense lobbying for it from the Obama administration.

"They abandoned the president yesterday," said House Majority Whip Kevin McCarthy, R-Calif.

The trade bill faces uncertainty in the House, where the vast majority of Democrats oppose it. A Democratic leadership aide told the Examiner about 20 lawmakers are willing to vote for the deal.

The Senate will continue to debate the trade deal Wednesday.

McConnell called on the contingency of pro-trade Democrats to cooperate, noting that the legislation cleared the Senate Finance Committee with bipartisan support.

"When they do, they'll find the same willing partners who have always been here," McConnell said. "They'll find we're ready to continue working across the aisle in good faith to move forward."