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

In the United States, the authority to veto bills is held by the President. This power allows the President to reject legislation passed by Congress, which serves as a critical check on legislative authority. When a bill is presented to the President, they can either sign it into law, allow it to become law without a signature by not acting on it for ten days, or issue a veto, at which point the bill is sent back to Congress along with the President's reasons for the veto.

Veto power is an essential part of the separation of powers established in the Constitution, ensuring that no single branch of government can dominate the legislative process. This mechanism reinforces the balance and accountability between the executive and legislative branches. The other entities listed do not have the authority to veto bills; for instance, the Vice President has a primarily legislative role and does not possess veto authority, the Supreme Court interprets laws rather than rejecting them, and the Speaker of the House manages legislative procedures but cannot veto legislation.