How a Bill Becomes Law, in the Order It Really Happens

Two numbers run the whole machine. In the House, 218 votes out of 435 passes a bill. In the Senate, 60 votes ends debate so the bill can get a vote at all. Everything else is plumbing.

But the plumbing is where bills live and die, and almost none of it happens on the floor. If you've ever watched a bill you cared about vanish without a single recorded vote, this is the piece that explains where it went.

Step one: somebody writes it, and somebody introduces it

Ideas for legislation come from anywhere. A member's staff, a trade association, a constituent, a governor, the White House. None of that matters legally. Only a member of Congress can introduce a bill.

The actual text usually gets drafted or cleaned up by the Office of the Legislative Counsel, a nonpartisan drafting shop in each chamber. In the House, the member drops the bill in the hopper, a box on the clerk's desk. In the Senate, a senator introduces it from the floor. The bill gets a number: H.R. something in the House, S. something in the Senate. Cosponsors can sign on.

That number is your handle for the rest of its life. Type it into congress.gov and you can watch everything that follows.

Step two: referral, and the first place bills die

The Speaker, advised by the House parliamentarian, refers the bill to the committee with jurisdiction. Sometimes more than one. A bill touching taxes and health care can get split between Ways and Means and Energy and Commerce, with each panel handling its own piece.

The committee chairman decides whether the bill gets a hearing, a markup, or nothing at all. Nothing at all is the common answer. Thousands of bills are introduced in a two-year Congress; the number signed into law is a small fraction of that, and you can see the running count yourself on congress.gov under each Congress's legislation tab.

There's one escape hatch in the House. After a bill has sat in committee for 30 legislative days, any member can file a discharge petition. Get 218 signatures and the bill goes to the floor over the chairman's objection. It's rare, it's a public list, and leadership hates it. That's the point.

Step three: markup

If the chairman does move the bill, the committee holds a markup. Members offer amendments, debate them, and vote. The text that comes out can look nothing like the text that went in.

Markup is the single most useful stage for a citizen to pay attention to, and almost nobody does. The amendments that get adopted here are the ones that survive. If your member sits on the committee of jurisdiction, your call at markup stage is worth ten calls the week of the floor vote.

The committee then votes to report the bill. Staff write a committee report explaining what the bill does, section by section. Courts sometimes read those reports later when the statute is ambiguous.

Step four: getting floor time

This is the part the cartoon leaves out entirely.

In the House, a reported bill doesn't just get a vote. It has to go through the Rules Committee, which writes a "rule" governing how long debate runs and which amendments are allowed. A closed rule means no amendments. A structured rule means a specific list. An open rule, now uncommon, means anything germane. The Rules Committee is stacked in leadership's favor by design, which makes it the chokepoint for everything controversial.

Noncontroversial bills skip that path and come up under suspension of the rules: 40 minutes of debate, no amendments, and a two-thirds vote to pass. Post office namings go this way. So do a lot of bipartisan bills nobody wants to fight over.

The Senate has no Rules Committee gatekeeper. It runs on unanimous consent instead. One senator objecting can stop the train, which is where the "hold" comes from. When consent fails, the majority leader files cloture under Senate Rule XXII, and cloture takes 60 votes.

That three-fifths threshold dates to 1975; before that it was two-thirds of senators present. The Senate lowered the bar to a simple majority for executive branch and most judicial nominations in November 2013, and extended that to Supreme Court nominations in April 2017. Legislation still needs 60.

Step five: the floor

The House debates major bills in the Committee of the Whole, a procedural setup that lowers the quorum to 100 and speeds things up. Amendments allowed by the rule get offered and voted on. Then the House resolves back into itself and takes the final passage vote.

The Senate debates, amends, and votes. Ties are broken by the Vice President, who is president of the Senate under Article I.

Passage in one chamber means nothing on its own.

Step six: both chambers, identical text

The Constitution requires the same words to pass both houses. Two routes get you there.

The old route is a conference committee: negotiators from each chamber hammer out a single version, and both chambers vote the conference report up or down with no amendments. Conferences have become less common.

The usual route now is amendment exchange, often called ping-pong. The Senate amends the House bill, sends it back, the House amends the amendment, and so on until one chamber blinks. It's messier and it happens faster.

There's also reconciliation, the budget process created by the Congressional Budget Act of 1974. Reconciliation bills can pass the Senate with 51 votes and can't be filibustered, but they have to follow a budget resolution and survive the Byrd Rule, section 313 of that same act, which lets any senator strike provisions that don't have a real budgetary effect. The parliamentarian advises on what stays. This is why big policy changes sometimes arrive as tax and spending provisions rather than plain mandates.

Step seven: presentment

Once both chambers pass identical text, the bill is enrolled, printed on parchment, and signed by the Speaker of the House and the President pro tempore of the Senate. Then it goes to the President.

Article I, Section 7 gives him ten days, Sundays excepted. Sign it and it's law. Veto it and it goes back to the chamber of origin, where a two-thirds vote in both houses overrides. Do nothing while Congress is in session and it becomes law without a signature. Do nothing while Congress has adjourned in a way that prevents the bill's return, and it dies. That's the pocket veto.

Step eight: the part nobody teaches

Signature isn't the finish line. The Office of the Federal Register assigns a public law number and publishes a slip law, then the text goes into the Statutes at Large, and the Office of the Law Revision Counsel codifies it into the U.S. Code.

Then read the effective date section. Plenty of laws don't bite for a year or more, and many don't function at all until an agency writes rules. That happens under the Administrative Procedure Act: a proposed rule in the Federal Register, a public comment period, a final rule. You can file a comment at regulations.gov, and agencies have to respond to substantive ones.

Congress gets one more swing. Under the Congressional Review Act, a joint resolution of disapproval can kill a new rule within a window of 60 days of session, and it can't be filibustered in the Senate. It still needs the President's signature, which is why it mostly works right after a change in administration.

And one more thing worth knowing: authorizing a program isn't funding it. The money comes through appropriations, separately, every year. A law can exist on the books and do nothing because the appropriators never wrote the check.

Bookmark the bill number. Check the Actions tab. That's the whole trick.