Final answer:
The Executive Branch has the power to veto bills.
Step-by-step explanation:
The branch of government that has the power to veto bills is the Executive Branch. The Executive Branch is headed by the President of the United States, and one of their powers is to veto or reject bills passed by the Legislative Branch. This power allows the President to prevent a bill from becoming a law. However, it's important to note that the veto can be overridden by the Legislative Branch if they have enough votes.
Learn more about Power to veto bills in the government