Who has the authority to veto bills in the United States?

The authority to veto bills in the United States rests with the President. This power is outlined in the U.S. Constitution, specifically in Article I, Section 7. When Congress passes a bill, it is sent to the President, who then has the option to either sign it into law or return it with a veto. A presidential veto serves as a check on legislative power, enabling the President to reject legislation that they believe is not in the best interest of the country. If the President vetoes a bill, Congress can attempt to override the veto, but doing so requires a two-thirds majority vote in both the House of Representatives and the Senate. This system of checks and balances is a fundamental principle of the U.S. government, ensuring that no single branch holds excessive power.