San Diego’s congressional delegation announced Tuesday it had secured the remaining funding needed to upgrade the long-neglected federal wastewater treatment plant at the U.S.-Mexico border that has allowed sewage from Tijuana to pollute South County shorelines.

But the stopgap spending bill that would provide the $250 million to complete the critical repairs was scrapped late Wednesday after President-elect Donald Trump and others urged the House of Representatives to reject the deal, putting the fate of the plant funding in limbo.

.S. Sen. Alex Padilla and Rep. Scott Peters led the lobbying effort to secure the funds for the U.S. International Boundary and Water Commission, which needs a total of $600 million to rehabilitate and expand the plant’s capacity. The sum does not include costs to operate and maintain the infrastructure.

Amid news of opposition from the incoming administration, a spokesperson for Peters said via email that while the situation was fluid, there was “a lot of concern” regarding the spending bill’s certainty. Padilla’s office said it was remaining hopeful the bill would still pass by this weekend.

In a statement Wednesday, Vice President-elect JD Vance said Republicans support money for disaster relief, which includes the $250 million for the South Bay plant, but added that a streamlined bill “that doesn’t give the Democrats everything they want” should be passed.

The South Bay facility has long been underfunded and undermaintained. It repeatedly takes in more sewage from Tijuana than it was designed to treat, which has left the agency with multiple Clean Water Act violations for releasing wastewater into the Pacific Ocean beyond what it is permitted