How Does a Bill Become a Law? From Idea to the US Code

Short answer: a bill becomes a law when both parts of a legislature, such as the House and Senate, pass the same text and the president or governor signs it. Lawmakers can also pass it again over a veto, which is a refusal to sign. In Congress, a member introduces the bill, a committee reviews it, the House and the Senate each vote, and the President signs. Most guides stop there. After the signature, the law gets a Public Law number, and editors place it in the United States Code, the subject-by-subject book where you read it today. States follow the same outline but set their own deadlines and start dates.

TL;DR

• A bill becomes a law after a committee, a vote in each chamber and a signature. Bills fail at every stage, and about 2.4% of the bills in the 117th Congress made it.
• The signature is not the end. The law is numbered, printed, then merged into the code.
• One law carries three labels: a bill number, a law number and a code citation. For the rule today, use the code citation.
• States differ on the governor's deadline, what silence means, and the start date.

How does a bill become a law? The federal path

Here is the path as a picture, then a table, then each step. Two official sites appear in the table: Congress.gov, the Library of Congress site for federal bills, and GovInfo, the Government Publishing Office site for official documents.

Steps 1 and 2: the idea, then the committee

Anyone can have an idea. Only a member of Congress can turn it into a bill, which is a proposed law. The member who introduces it is the sponsor. Members who sign on to support it are cosponsors. House bills are numbered H.R. 1, H.R. 2 and so on (H.R. means House of Representatives). Senate bills are numbered S. 1, S. 2 and so on. The Constitution says bills that raise taxes must start in the House (Article I, Section 7).

A Congress is a two-year term, and bill numbers start over with each one. A joint resolution follows the same path as a bill and can become a law, unless it proposes a constitutional amendment. Other resolutions usually state an opinion or set an internal rule.

The bill is then sent to a committee, a small group of members who focus on one subject, such as the Judiciary. The committee may hold a hearing, where witnesses speak, and then a markup, a meeting where members go through the text line by line, offer changes and vote. If the committee votes yes, it "reports" the bill, which means it sends it to the full chamber. Many bills get no hearing or vote.

Steps 3 to 5: the floor votes and the compromise

The full chamber debates the bill and votes. Once it passes, the chamber's official copy is called the engrossed bill: the text exactly as passed, certified by the clerk and sent to the other chamber.

The Senate has an extra hurdle. A filibuster is a move to drag out debate so a vote never happens. Cloture is the vote that ends debate. Since 1975 it has taken three-fifths of all senators, which is 60 of 100, according to the Senate's own website.

The second chamber repeats the process. Both must pass identical text. If the second chamber changes the bill, the first can accept the change, or the two can trade versions. Or they can form a conference committee, a temporary group of members from both chambers that writes one compromise text for both to vote on. Once both have approved the same words, the bill is enrolled. That is the final official copy, signed by the presiding officers of the House and the Senate and then sent to the President.

Step 6: the President's desk

Sending the enrolled bill to the President is called presentment. Article I, Section 7 of the Constitution gives these options:

• Sign it. It becomes a law.
• Veto it. The President returns it unsigned to the chamber it started in, with objections.
• Do nothing. After ten days (Sundays do not count), it becomes a law without a signature, as long as Congress is still in session.
• Do nothing when Congress has adjourned. To adjourn is to stop meeting. If that blocks the bill's return, the bill dies. This is a pocket veto. The House's history office says Congress, backed by modern court rulings, treats it as valid only when Congress adjourns for good at the end of a session.

An override is a vote to pass a vetoed bill anyway. It needs two-thirds of each chamber. A pocket veto cannot be overridden. The House's official table of vetoes, updated January 9, 2026, counts 2,599 vetoes since George Washington issued the first one in 1792: 1,533 regular and 1,066 pocket. Congress overrode 112. That is about 7% of the regular vetoes.

Steps 7 and 8: what happens after the signature

This is where people lose track of the law. After the signature, the bill goes to the Office of the Federal Register, part of the National Archives. It assigns a Public Law number, such as 117-224, which means the 224th public law of the 117th Congress. A public law affects everyone. A private law helps one person or group. The office then prepares the slip law, the first separate printed copy of one law. Until it is printed, the enrolled bill is the text.

Later, slip laws are gathered in order into the Statutes at Large, a bound set of volumes. A cite like 136 Stat. 2290 means volume 136, page 2290.

That set is in date order, not subject order. So editors at the House's Office of the Law Revision Counsel sort each law into the United States Code, which groups all current federal law by subject. This step is called codification. Many laws do not get their own place in the Code. They change existing sections, or stay as notes. Each section ends with a credit line naming the Public Law and the Statutes at Large page it came from.

How many bills become law?

Few do. In the 117th Congress (January 3, 2021, to January 3, 2023), members introduced 15,242 bills and joint resolutions, the two kinds that can become law. Congress.gov, checked in October 2026, lists 365 laws from that term: about 2.4%.

How we counted: Congress.gov lists 9,709 House bills, 5,357 Senate bills, 106 House joint resolutions and 70 Senate joint resolutions. The 365 laws are 362 public laws, numbered 117-1 through 117-362 on GovInfo, plus 3 private laws. The true share of ideas enacted is a little higher, because lawmakers often attach pieces of a stalled bill to one that is moving.

One federal bill, traced: the Speak Out Act

The Speak Out Act is one standalone bill, not a giant package. It says a contract clause that bars someone from talking about sexual assault or harassment, signed before any dispute began, cannot be enforced in court. A court will not enforce such a clause where the conduct is alleged to break federal, tribal or state law.

The bill's life (dates from the official bill record on Congress.gov):

• July 13, 2022. Senator Kirsten Gillibrand introduces Senate bill S. 4524. It goes to the Judiciary Committee. It ends up with 14 cosponsors from both parties.
• September 15, 2022. The committee votes to report it with a rewritten text. It is formally reported on September 20.
• September 29, 2022. The Senate passes it by unanimous consent, meaning no senator objects.
• November 16, 2022. The House passes it, 315 to 109 (recorded vote number 480). The House allowed no amendments. It passed the Senate's text unchanged, so no conference was needed.
• December 1, 2022. It is presented to the President.
• December 7, 2022. The President signs it. Congress.gov records "Became Public Law No: 117-224."

The act. Public Law 117-224 has five sections and is printed at 136 Stat. 2290 to 2292.

The code. The editors gave it its own chapter, Chapter 164 of Title 42 of the United States Code. Act sections 2 to 5 became Code sections 19401 to 19404, in order. The short title in act section 1 became a note. Section 19403 ends with its credit line: "Pub. L. 117-224, § 4, Dec. 7, 2022, 136 Stat. 2291." One more change: the act said it applies to claims filed "on or after the date of enactment." Code section 19404 replaces that phrase with the actual date, December 7, 2022.

One idea now carries three labels: S. 4524, Public Law 117-224 and 42 U.S.C. §§ 19401 to 19404, meaning Title 42 of the United States Code, sections 19401 to 19404. Bill numbers expire with each Congress. The Code section is where the current rule lives, so cite it.

How to find the final law from a bill number

1. Open the bill on Congress.gov. Look for "Became Public Law No:" in the status line. If it is not there, the bill is not a law.
2. Read the act on GovInfo. Search Public and Private Laws for the number. It shows the Statutes at Large page.
3. Find where it went in the Code. The House's Office of the Law Revision Counsel publishes classification tables that map each Public Law to the Code sections it created or changed.
4. Check the credit line. It leads from a Code section back to the act, and our guide to session laws and the code explains why the two can differ.

Our guides to reading Congress.gov data and to bills versus laws show what bill trackers cover. To write the cite, see how to cite a statute.

How does a bill become a law in my state?

Each state has its own constitution, so the details differ. In most states the path is committee, two chambers, governor, and Nebraska is the exception. "Silence signs" below means a governor who does nothing in time lets the bill become law. Governor deadlines and start dates are the traps to check. The facts come from each state's constitution, cited below.

• Nebraska (Article III, Sections 1 and 27; Article IV, Section 15)
  • It has a Legislature of one chamber.
  • The governor has five days, Sundays not counted, and silence signs.
  • Three-fifths of the members elected override a veto.
  • New laws start three months after the session ends, unless two-thirds vote for an emergency.
• Texas (Article III, Sections 5 and 39; Article IV, Section 14)
  • The governor has ten days, Sundays not counted. After the Legislature adjourns, silence signs unless the governor vetoes within 20 days.
  • The governor can veto single items only in spending bills.
  • Two-thirds of the members present override.
  • A new law starts 90 days after adjournment unless two-thirds vote otherwise.
  • The Legislature meets every two years.
• West Virginia (Article VI, Section 30; Article VII, Section 14)
  • The governor has five days, or 15 days after adjournment, and silence signs.
  • A simple majority of the members elected in each house overrides a veto, which is unusual.
  • A new law starts 90 days after passage unless two-thirds vote otherwise.
• California (Article IV, Sections 8 and 10)
  • The governor has 12 days for most bills, and silence signs.
  • The governor can reduce or eliminate spending items. Two-thirds of the members override a veto.
  • A regular-session law starts January 1 after a 90-day wait, unless it is an urgency law, meaning an emergency law.
  • A bill must be printed and posted online for 72 hours before the final vote, unless an emergency waiver applies.
• Washington (Article II, Section 1; Article III, Section 12)
  • The governor has five days, or 20 days after adjournment, and silence signs.
  • The governor can veto whole sections as well as spending items.
  • A new law starts 90 days after the session ends.
• New York (Article IV, Section 7)
  • The governor has ten days.
  • A bill that reaches the governor after the Legislature ends dies unless approved within 30 days. That works like a federal pocket veto.

One state bill, traced: Texas House Bill 4

House Bill 4 of the 88th Legislature created the Texas Data Privacy and Security Act. Its full action list is on Texas Legislature Online, the Legislature's own site.

• February 16, 2023. Representative Giovanni Capriglione files HB 4 (House Bill 4). It goes to the Business and Industry Committee.
• March 20, 2023. After hearings, the committee votes 8 to 0 to report it with a rewritten text.
• April 5, 2023. The House passes it. After a May 4 hearing, the Senate State Affairs Committee votes 11 to 0 to report it. The Senate passes it, with changes, on May 10.
• May 15 to 28, 2023. The House refuses the Senate's changes and asks for a conference committee. Its report is adopted by the Senate on May 27 and the House on May 28.
• May 29 to June 18, 2023. The session ends on May 29. The bill goes to the governor on May 30. He signs it on June 18, the last day he had.

The bill's own note sets the start at July 1, 2024, with one subsection starting January 1, 2025. Filing to signature took 122 days.

The session law, meaning the law as first published, is Acts 2023, 88th Legislature, Regular Session, chapter 995, which Texas abbreviates as "Acts 2023, 88th Leg., R.S., ch. 995." Texas uses a chapter number where Congress uses a Public Law number. The code is Texas Business and Commerce Code, chapter 541. Its first section ends with this history note: "Added by Acts 2023, 88th Leg., R.S., Ch. 995 (H.B. 4), Sec. 2, eff. July 1, 2024." It plays the role of the federal credit line. "Eff." means effective. Our state privacy law guide covers other states.

How bills fail or stall

A bill can die at any of these points. The Texas Legislative Reference Library published counts for the 88th regular session on June 22, 2023.

• It dies in committee. Texas members filed 5,619 House bills and joint resolutions. Committees reported out 2,200, about 39%. Of 2,726 started in the Senate, 866 got out, about 32%.
• It never gets a floor vote. A bill that clears committee can still sit on the calendar. In Texas, 1,594 of the 5,619 passed the House.
• The second chamber ignores it. Senate committees reported out 871 of the 1,520 House measures sent to them, and 769 passed the Senate.
• The session ends. In Congress, every pending bill dies when the two-year term ends. Supporters must start over under a new number.
• The executive vetoes it. In Texas, 1,246 bills reached the governor. He signed 1,038, let 131 become law unsigned, signed one while striking a single spending item, and vetoed 76, about 6%. Counting bills only, not joint resolutions, 1,170 of the 8,046 filed became law, about 14.5%.
• The override fails. About 93% of regular federal vetoes have stood. Pocket vetoes (1,066) cannot be overridden at all.

What goes wrong when you look up a law

• You cite the bill number. It resets every term. Use the code citation.
• You treat "signed" as "in force." Texas HB 4 was signed in 2023 and started in 2024. Check the effective date.
• You stop at the law. Agencies often write rules under it. See what a regulation is.

This is general information, not legal advice.

This guide is part of US Law Data: The Complete Guide, a map of where US law comes from and how to use it.

FAQ

What are the steps for a bill to become a law? A member introduces the bill, a committee votes on it, and the first chamber votes. The other chamber does the same, and both agree on one text. The President signs it, or Congress overrides a veto. The law is then numbered, printed and placed in the Code.

How long does it take for a bill to become a law? There is no set time. The Speak Out Act took 147 days from introduction to signature, and Texas HB 4 took 122 days. Most bills never finish.

What happens if the President does not sign a bill? If Congress is in session, the bill becomes a law after ten days, not counting Sundays. If Congress has adjourned and blocked the bill's return, it dies. That is a pocket veto.

Can Congress override a veto? Yes. Each chamber must vote by two-thirds to pass the bill again. Congress has done it 112 times in the nation's history, per the House's veto table. A pocket veto cannot be overridden.

What happens after the President signs a bill? The Office of the Federal Register gives it a Public Law number and prints it as a slip law. It is later bound in the Statutes at Large, and the Office of the Law Revision Counsel places it in the United States Code.

How many bills become law? In the 117th Congress, 365 laws came from 15,242 bills and joint resolutions, about 2.4%. In Texas in 2023, about 14.5% of the bills filed became law.

How does a bill become a law in my state? The outline is the same: committee, two chambers, governor. Deadlines differ: five days in Nebraska, 12 in California. After adjournment, silence signs the bill in five of the six states above and kills it in New York. Check your state's constitution and its legislature's bill status page.

Where do I find the text of a law once it passes? Use the legislature's website for the act and the official code for the current wording. Our primary law guide explains the types of law.

To put current US statutes and regulations into your own product, see the Vaquill AI legal data API, a feed software uses to pull in current legal text.

Priyansh Khodiyar

Co-Founder & CTO

Priyansh leads engineering and AI at Vaquill AI: the pipelines that pull statutes, regulations and court rules from every US jurisdiction's official publisher, and the REST API, MCP server and open dataset that serve them.