On March 23, 2024, the House passed a $1.2 trillion minibus appropriations package under a structured rule (H. Res. 1063) that allowed zero floor amendments. The Senate followed two days later under a unanimous consent agreement that limited debate time but preserved the fiction of open deliberation. The two chambers had passed different versions of the underlying appropriations bills, with hundreds of provisions in conflict. No conference committee was convened. No conferees were appointed. No conference report was filed.
Instead, staff directors from the House and Senate Appropriations Committees, along with leadership aides from both chambers, negotiated the final text in closed-door meetings over roughly 72 hours. The product—a 1,012-page enrolled bill—was posted online with less than one day for members to read it before the vote. The Congressional Record for the floor debate runs about 14 pages. The actual negotiation that produced the bill left no public record at all.
This is how major legislation gets reconciled in 2024. The conference committee, once the formal mechanism for resolving disagreements between the House and Senate, has become a procedural artifact.
What Conference Committees Were Designed to Do
Under House Rule XXII and Senate Rule XXVIII, a conference committee is a bicameral panel composed of members from both chambers, appointed to reconcile differing versions of the same bill. The House instructs its conferees through a motion to go to conference; the Senate agrees by unanimous consent or motion. Presiding officers select conferees on recommendation of the committee or committees of jurisdiction.
The process has a clear statutory architecture. After one chamber amends the other’s bill and the second chamber disagrees with the amendments, either chamber may request a conference. The conference committee meets—historically in public sessions, though executive sessions for drafting are permitted under Senate precedent—to negotiate a compromise. The resulting conference report must be signed by a majority of conferees from each chamber and is then presented to both floors under special procedures. House Rule XXII clause 3 prohibits amendments to a conference report on the floor; the vote is up or down. Senate Rule XXVIII places strict limits on what can be included in a conference report—generally confined to matters in disagreement between the chambers, though in practice this constraint has been interpreted liberally.
The design was deliberate. Conference committees created a structured, named, accountable checkpoint where differences between the two chambers would be resolved by a defined group of legislators, on the record, with a product subject to floor vote but not floor amendment. The mechanism was not transparent by modern standards. But it was traceable. You could identify who was in the room.
The Decline: By the Numbers
Conference committees were never the most common path to enactment—even in the mid-20th century, many bills were resolved through amendment exchange between the chambers. But their use has collapsed. According to data compiled by the Brookings Institution from Congressional Record proceedings and House and Senate journal entries, the number of conference reports filed per Congress has dropped from roughly 50–60 in the 1970s to single digits in recent Congresses. The 118th Congress (2023–2024) produced fewer than five conference reports across all legislation. The 94th Congress (1975–1976) produced over 50.
The decline is not linear. It accelerates in the mid-1990s and again after 2010. Those inflection points correspond to specific institutional changes: the rise of partisan scheduling under House Speaker Newt Gingrich, the consolidation of leadership control over the floor agenda, and the shift toward omnibus and minibus packaging that makes traditional conference procedures logistically unwieldy.
What Replaced Conferences: The Leadership-Driven Model
The mechanism that replaced conference committees is not a single formal procedure. It is an ad hoc, leadership-driven process that combines several existing tools: pre-conference staff negotiation, the manager’s amendment, and the structured rule from the House Rules Committee.
When the House and Senate pass different versions of a bill, leadership in both chambers typically task the relevant committee staff directors with opening a negotiation channel. These staff-level discussions often begin before the second chamber has even voted—sometimes before the first chamber has finished its floor consideration. The goal is to have a compromise text ready, or nearly ready, by the time both chambers have acted, so that the final product can be moved quickly under expedited procedures.
The compromise text is typically packaged as a manager’s amendment—a single amendment that replaces the underlying bill’s text with the negotiated version. In the Senate, the floor manager of the bill offers the manager’s amendment, usually the committee chair or ranking member. In the House, it is typically incorporated into the rule itself or offered as a single en bloc amendment under the structured rule’s terms.
The House Rules Committee, operating under House Rule XIII, drafts a special rule (a resolution reported as H. Res. ___) that governs floor consideration. That rule specifies: how much debate time is allotted, which amendments are made in order, whether they are subject to further amendment, and the motion to recommit terms. In the case of major legislation that has been pre-negotiated, the rule typically makes in order only the manager’s amendment—or no amendments at all—and provides for a straight up-or-down vote on the underlying bill as amended.
This is what happened with the FY2024 minibus. The House Rules Committee reported a structured rule that provided for one hour of debate and no amendments. The Senate operated under a time agreement negotiated by leadership. The final text was the product of staff negotiations that no member of the public, and few members of Congress, had access to before the bill was posted.
Why This Happened: The Legislative Reorganization Acts
The shift away from conference committees toward leadership-driven reconciliation is not accidental. It is the product of specific institutional reforms that redistributed power within Congress.
The Legislative Reorganization Act of 1970 (Pub. L. 91-510) was primarily aimed at increasing transparency and reducing the autocratic power of committee chairs. It required recorded votes in committee, opened most conference sessions to the public (with exceptions for national security and certain markup sessions), and expanded the availability of committee records. It also strengthened the role of subcommittees and limited the ability of committee chairs to unilaterally block legislation.
The Congressional Budget Act of 1974 (Pub. L. 93-344) created the budget reconciliation process, which would become one of the most powerful legislative vehicles in Congress. Reconciliation bills, protected from filibuster in the Senate under Section 305(b)(2) of the Budget Act and the Byrd Rule (Section 313), are subject to strict amendment limitations and debate time caps. Because reconciliation bills are already subject to tight floor controls, the need for a traditional conference committee diminishes—leadership can negotiate the final text through staff and present it under the reconciliation rules.
The result was a slow but unmistakable centralization of legislative drafting authority. Committee chairs, who once controlled conference committees within their jurisdictions, saw their authority diluted by subcommittee reforms and transparency requirements. Leadership staff, who controlled the floor schedule and the Rules Committee’s agenda, gained leverage over what reached the floor and in what form. By the 2000s, the conference committee had become optional. By the 2020s, it had become exceptional.
Who Actually Has Drafting Authority Now
The disappearance of conference committees has concentrated drafting authority in a remarkably small number of hands. When a conference committee is convened, conferees are drawn from the committees of jurisdiction—typically the chair, ranking member, and a selection of members from both parties. The staff who support them are committee staff, and their work product is a conference report that is publicly filed and subject to floor vote.
When the leadership-driven model is used instead, the negotiation is conducted by a much smaller group. Typically this includes: the staff director and chief counsel of the relevant House and Senate committees, the leadership staff responsible for floor strategy (in the House, the Majority Leader’s staff and the Speaker’s legislative team; in the Senate, the Majority Leader’s floor staff), and the parliamentarians, who advise on what can and cannot be included under the procedural vehicle being used.
In practice, this means that for a major bill, the final text may be drafted by 8 to 12 staff members, with the parliamentarians advising on procedural compliance. The members who vote on the bill may see the final text less than 24 hours before the vote. The public may see it even later.
This is not a critique of staff. Congressional staff are, in my experience, conscientious and capable. The problem is structural. When drafting authority is concentrated in a handful of staff who are operating under time pressure and without the accountability mechanisms that conference committees provided—named conferees, filed reports, recorded votes on specific provisions—the likelihood of drafting errors increases, and the ability of members and the public to scrutinize the text before enactment decreases.
Drafting Errors and the Cost of Single-Pass Text
Drafting errors in enrolled bills are more common than most people assume. The Office of the Law Revision Counsel in the House and the Office of the Senate Parliamentarian routinely identify technical errors in enacted legislation—cross-references to repealed sections, inconsistent effective dates, internal contradictions between titles. Most are corrected by subsequent technical corrections bills or, in some cases, by the enrolling process itself under 1 U.S.C. § 106, which allows the House Clerk to make minor technical corrections to the enrolled bill.
But substantive drafting errors—where the enacted text does not match the negotiated agreement—do occur, and they are harder to fix. A 2019 CRS report (R45978) identified several instances where enacted statutes contained provisions that no member had publicly debated, introduced, or amended, because they were inserted during staff-level negotiations that produced the final text. The report noted that when the traditional conference process is bypassed, the opportunities for members to catch drafting errors before enactment diminish significantly.
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The Manager’s Amendment as Procedural Bypass
The manager’s amendment deserves specific attention because it is the primary vehicle through which pre-negotiated text reaches the floor without traditional conference scrutiny.
In the Senate, a manager’s amendment is a single amendment offered by the floor manager that typically contains the text of the bill as modified by the pre-conference negotiation. It is usually offered after the motion to proceed has been agreed to and before any other amendments are considered. Under Senate precedent, the manager’s amendment is not subject to a separate point of order for containing matter not pending before the Senate, because it amends the underlying bill, which is pending. This means the manager’s amendment can contain entirely new text that was not in either the House or Senate version of the bill.
In the House, the manager’s amendment is typically incorporated into the structured rule. The Rules Committee reports a rule that makes in order the manager’s amendment, often as a single en bloc amendment that replaces the underlying text. Under House Rule XIII clause 4, the Rules Committee can waive points of order against the amendment, including points of order under the Congressional Budget Act for containing provisions that are not budgetary, or under House Rule XXI for containing appropriations in a bill that is not an appropriations bill.
The practical effect is that the manager’s amendment can contain the entire negotiated product—hundreds of pages of text that neither chamber has previously voted on—and it reaches the floor under a rule that limits or eliminates the ability of members to offer amendments to it. The vote on the manager’s amendment is, in most cases, the only vote on the substance of the negotiated text.
This is not illegal. It is not a violation of the rules. It is the rules, as they have evolved, being used as designed. But it means that the procedural checkpoint that conference committees once provided—where conferees reviewed and voted on specific provisions before the text reached the floor—has been replaced by a single vote on a single amendment that no member can amend.
Public Understanding vs. Procedural Reality
The gap between how the public understands Congress and how Congress actually works is not a new phenomenon. Research from the Pew Research Center has consistently documented that public trust in Congress is low and that public understanding of congressional procedure is limited. But the specific gap here is not about trust or civic knowledge in the abstract. It is about a concrete procedural substitution: a formal, traceable mechanism has been replaced by an informal, untraceable one, and the public has no reason to know this has happened because the end product—an enacted public law—looks the same either way.
The political science literature on congressional procedural change, including work published through Brookings, has tracked this shift in detail. The consensus among institutional scholars is that the decline of conference committees reflects a broader centralization of legislative authority in leadership offices, driven by partisan polarization, the expansion of the scope of individual bills through omnibus packaging, and the strategic value of controlling the floor agenda. When the party leadership controls what reaches the floor and in what form, the incentive to use a deliberative mechanism like a conference committee—where the minority party’s conferees might extract concessions—diminishes.
Key Terms
Conference Committee: A bicameral panel convened under House Rule XXII and Senate Rule XXVIII to reconcile differing versions of the same bill. Conferees are appointed by the presiding officer on recommendation of the committee of jurisdiction. The conference report they produce is subject to an up-or-down floor vote with no amendments permitted under House Rule XXII clause 3.
Manager’s Amendment: A single amendment offered by the floor manager of a bill (typically the committee chair or ranking member) that replaces the underlying text with a pre-negotiated version. In the Senate, it is offered after the motion to proceed; in the House, it is typically incorporated into the structured rule reported by the Rules Committee under House Rule XIII.
What This Means for Practitioners
If you are a committee staffer preparing for a major bill’s floor consideration, the first practical question is whether your leadership intends to pursue a formal conference or will default to the leadership-driven model. In most cases, the answer is already the latter. Your job is to understand what that means for your access to the negotiation, your ability to flag problems in the text, and your member’s ability to influence the final product before it reaches the floor. Maintain a running list of provisions your member cares about and track whether each one survives the staff-level negotiation. When the manager’s amendment text is posted, compare it immediately against the version your committee reported. Any provision that appears in the manager’s amendment but was not in either chamber’s reported bill was inserted during staff negotiation. Flag those to your chief of staff and, if the provision affects your member’s district or state, to your member directly. Ask leadership staff three specific questions when the manager’s amendment circulates: Who drafted each new provision? Was the parliamentarian consulted on whether it is germane to the underlying vehicle? Is it subject to any point of order under the Congressional Budget Act or House Rule XXI? The answers determine whether a provision can be challenged on the floor or whether it is locked in.
If you are agency counsel or a lobbyist tracking implementation, your focus should be on the enrolled bill text and the Congressional Record, not the press releases. After passage, pull the enrolled bill from Congress.gov and compare it against the version your agency or client reviewed during the committee stage. Provisions that bypassed conference scrutiny often contain drafting ambiguities that surface only during implementation. Check the Congressional Record for any colloquies or statements of intent related to those provisions—members sometimes insert interpretive language into the Record that agencies later use to guide rulemaking. If a provision your client cares about was modified in the manager’s amendment without a public explanation, file a FOIA request for any OIRA review correspondence related to the implementing regulation. The regulatory record will tell you how the agency interpreted the ambiguous text, and that interpretation may diverge from what the committee intended. For appropriations lobbyists, track which programs received anomalies in the joint explanatory statement—if there is no joint explanatory statement because there was no conference, look for report language in the committee report from the chamber that originated the underlying bill. That language, while not legally binding, still guides agency spending decisions and may be your only evidence of congressional intent.