Who has the power to veto bills?

The power to veto bills is held exclusively by the President of the United States. This authority is outlined in the U.S. Constitution, specifically in Article I, Section 7. When Congress passes a bill, it is sent to the President for approval. If the President disapproves of the bill, they can exercise the veto power, effectively preventing it from becoming law unless Congress can override the veto with a two-thirds majority vote in both the House of Representatives and the Senate.

This mechanism underscores the system of checks and balances integral to the structure of the U.S. government, ensuring that no single branch holds too much power. The other options listed, such as the Senate, the House of Representatives, and the Supreme Court, do not have the authority to veto legislation; rather, they play different roles in the legislative and judicial processes.