How a bill really becomes law
The answer
The Schoolhouse Rock version, a bill is introduced, a committee approves it, both chambers vote, the president signs it, is real but radically incomplete. It describes the path for the rare bill that survives. Across the 118th Congress (2023-2025), only about 1% of the 19,315 bills introduced became law on their own, and roughly 3% did factoring in bills whose text got folded into other legislation.1 The gap between introduced and law is not filled by debate and voting. It is filled by committees that never schedule a hearing, leadership that never puts a bill on the calendar, and chambers that pass different versions nobody reconciles.
How it actually works
A bill is introduced and referred to one or more committees by subject matter. Most bills stop there. The committee chair controls whether it gets a hearing or a markup, and most bills get neither. If a committee marks up and votes to report a bill, it goes to the floor, but floor time is scarce and controlled by party leadership, not a queue. In the House, the Rules Committee often sets which amendments are allowed. In the Senate, any bill can be blocked by a hold or a filibuster requiring 60 votes to overcome. If a bill passes both chambers, it often passes in different forms, requiring a conference committee or an exchange of amendments to produce identical text. Only identical text goes to the president, who can sign it, veto it, or let it become law without a signature after 10 days if Congress is in session.2
Example: the Continuing Appropriations, Agriculture, Legislative Branch, Military Construction and Veterans Affairs, and Extensions Act, 2026 (P.L. 119-37) ended the 43-day government shutdown on November 12, 2025, after competing House and Senate funding bills each failed in the Senate for weeks. Floor votes alone did not resolve the inter-chamber disagreement.
Who holds the power
Committee chairs decide what gets a hearing. Party leadership, the Speaker and the Senate Majority Leader, controls floor scheduling. Any senator can place a hold, and 41 senators can sustain a filibuster. The president can veto, requiring two-thirds of both chambers to override.
Some bills bypass committee entirely via discharge petitions in the House or unanimous consent in the Senate, but both are rare and require broad support.
Where you come in
See the guides on how to contact your member of Congress before a markup and how to reach committee staff who control whether a bill gets scheduled.
Related
Glossary: markup, cloture, filibuster, continuing resolution
See also the explainers on committees and the filibuster and cloture.