Every federal law in the United States begins as a "bill"—a proposal for a new law or a change to an existing one. While the process is famous for being complex, its design is intentional: to ensure that only ideas with significant support and scrutiny actually become the law of the land.
A bill can be written by anyone—citizens, advocacy groups, or the President—but it must be "sponsored" by a member of Congress (a Representative or Senator) to be officially introduced. This member is the bill's primary champion.
Once introduced, the bill is sent to a committee of experts on that specific topic (like Agriculture or Defense). This is where most bills "die." Committees research, hold hearings, and make changes to the bill. If they approve it, it moves to the full chamber.
The House or Senate debates the bill, proposing amendments and arguing its merits. A simple majority vote is usually required to pass. However, in the Senate, the "filibuster" can sometimes require 60 votes to allow a bill to move to an actual vote.
After passing one chamber, the bill goes to the other. If the House and Senate pass slightly different versions of the same bill, they must meet in a "conference committee" to resolve the differences into one single text.
Once both chambers pass the exact same version, it goes to the President. They have three options: