Sen. Joe Manchin gave Senate Majority Leader Chuck Schumer a stark warning about using a budget procedure to bypass the Senate filibuster and ram through major legislation with slim party-line votes.

“We should all be alarmed at how the budget reconciliation process is being used by both parties to stifle debate around the major issues facing our country today,” the West Virginia Democrat said in a Washington Post op-ed on Wednesday night. “I simply do not believe budget reconciliation should replace regular order in the Senate.”