Sen. Joe Manchin (D-W.Va.) is warning other members of his party not to back out of a compromise climate deal that helped Democrats pass the $700 billion Inflation Reduction Act.

Specifically, Manchin agreed to lend his support to the bill—crucial for the bill’s eventual passage through the evenly divided Senate—in exchange for consideration at a later date of separate legislation that would grant some concessions to fossil fuels and would cut down on regulations of the industry.

Now, with the Inflation Reduction Act passed, some Democrats are getting cold feet about honoring that deal, which they say would undercut the effects of the approximately $400 billion in climate spending contained in the larger reconciliation bill.

At a recent event in his home state of West Virginia, Manchin blasted far-left members of his party for musing on undoing the bill.

“I’ve got the hard left right now saying, ‘Hell no, we’re not going to do anything now that makes it look like we’re helping Manchin,’” Manchin said. “I said, ‘You’re not helping me, you’re helping yourself if you want to get anything built in America.’”