What does the veto power allow the President to do?

The veto power allows the President to reject any legislative proposal that has been passed by Congress. This authority serves as a check on the legislative branch, ensuring that the President can prevent the enactment of laws that they find objectionable or harmful. When the President exercises this power, the bill is returned to Congress with an explanation of the reasons for the veto. This interaction emphasizes the balance of power within the federal government and reinforces the idea that legislation requires the agreement of both the legislative and executive branches in order to become law.

The other options pertain to different actions or powers that do not accurately represent the veto authority. Approving all congressional bills involves acceptance, which is contrary to the notion of a veto. Calling a special session of Congress relates to the President's ability to convene Congress for urgent matters, but it does not encompass the veto power. Finally, proposing amendments to the Constitution is a separate process that involves Congress and state legislatures, and does not fall under the purview of the veto authority.