As per Lawkidunya, If a bill has passed in both the U.S. House of Representatives and the U.S. Senate and has been approved by the President, or if a presidential veto has been overridden, the bill becomes a law and is enforced by the government.

How does a Bill Become a Law Steps?

STEP 1: The Creation of a Bill. Members of the House or Senate draft, sponsor and introduce bills for consideration by Congress.
STEP 2: Committee Action.
STEP 3: Floor Action.
STEP 4: Vote.
STEP 5: Conference Committees.
STEP 6: Presidential Action.
STEP 7: The Creation of a Law.

How Long does it Take for a Bill to Become Law

When a bill passes in the House and Senate and is sent to the President for a signature, it is said to be enrolled. The President can take one of several possible actions: The president may take no action. If Congress is in session, the bill automatically becomes law after ten days.