Manchin bemoaned the bipartisan opposition that's brewing against his energy bill.
"What I'm hearing is that this is like revenge politics," Manchin said Tuesday.
Democratic leaders want to overhaul the permitting process for fossil fuel and clean energy projects.
"I've been around a long time in state politics and federal politics," Manchin said at a Tuesday press conference.
That Democrat-only bill poured $433 billion into clean energy tax credits, healthcare subsidies and imposed a minimum tax on profitable corporations.