Measures to repeal vehicle emission rules and create a program allowing businesses to pay fees for accelerated permitting have been stripped from the Republicans’ One Big Beautiful Bill Act, a blow to the GOP deregulatory agenda.  

The Senate parliamentarian said Thursday that the provisions violate the Byrd Rule, which limits the kinds of measures that can be included in budget reconciliation. Budget reconciliation is a special process that allows fiscal legislation to bypass the filibuster, and Republicans are using it to advance the tax and spending megabill. Under the Byrd Rule, reconciliation provisions must be primarily fiscal in their effects.