This is a draft of a law that is introduced by a legislator (called the bill’s sponsor). In Congress, a bill is introduced in either the House or Senate and then considered by a legislative committee. If it passes committee, it then goes to the full House or Senate for debate and a vote for or against the bill. A bill must pass both houses of Congress by a majority vote and any differences in language in the House and Senate versions must be resolved for the bill to be sent to the president. A bill becomes law if the president signs it; the president may also veto the bill.