Complex sentence: Under the Senate interpretation of the rule, reconciliation can occur over a single or multiple bills-with the stipulation that each topic (spending, revenues, and debt limit) can be considered in only one bill per year unless Congress passes a second budget resolution.
Split into simpler sentences: Under the Senate interpretation of the rule, reconciliation can occur over a single or multiple bills. Reconciliation may only occur in spending, revenues, and debt limit each in only one bill per year unless Congress passes a second budget resolution.