Who has the authority to sign bills into law?

The authority to sign bills into law rests exclusively with the President of the United States. In the legislative process, once Congress has approved a bill through both the House of Representatives and the Senate, it is sent to the President for approval. The President can then either sign the bill into law or veto it, sending it back to Congress with the reasons for the veto. This role of the President as the final step in the legislative process ensures a system of checks and balances, a fundamental principle of the U.S. government.

While the Vice President plays an important role in the Senate, primarily as a tie-breaking vote, they do not have the authority to sign bills into law. Similarly, the Speaker of the House and the Chief Justice of the United States hold significant positions within the government but do not possess the power to enact legislation through signing bills. The Speaker manages the House proceedings, and the Chief Justice oversees the judicial system, ensuring the Constitution's interpretation and application. Thus, the President's unique position at the end of the legislative process is what grants them the authority to sign bills into law.