2 U.S.C. § 634 — Concurrent resolution on the budget must be adopted before budget-related legislation is considered

(a) General rule. Until the concurrent budget resolution for a fiscal year is agreed to, the House may not consider, for the resolution's first fiscal year, and the Senate may not consider, for any fiscal year covered by it, a bill or joint resolution, an amendment or motion to one, or a conference report on one that (1) first provides new budget authority; (2) first increases or decreases revenues; (3) increases or decreases the public-debt limit effective during that year; (4) in the Senate, first provides new entitlement authority; or (5) in the Senate, first increases or decreases outlays.
(b) House exceptions. Subsection (a) does not apply in the House (1)(A) to a reported bill or joint resolution providing advance discretionary new budget authority first available in the first or second fiscal year after the budget year, or (B) to a reported bill or joint resolution first changing revenues in a fiscal year after the one covered by the resolution; (2) after May 15, to a general appropriation bill or amendment; or (3) to a bill or joint resolution unless a committee reported it.
(c) Senate appropriation measures. (1) Until the budget resolution is agreed to and the Senate Appropriations Committee receives an allocation under section 633(a) for that year, the Senate may not consider an appropriation bill or joint resolution, amendment or motion to one, or conference report on one for that year or a later year. (2) This does not apply to appropriations making advance appropriations for the first or second fiscal year after the year of the allocation.