What principle allows Congress to override a presidential veto?

The principle that allows Congress to override a presidential veto is rooted in the concept of checks and balances. This system is designed to ensure that no single branch of government becomes too powerful. When the President vetoes a bill, Congress has the ability to respond by voting to override that veto. To successfully do so, a two-thirds majority in both the House of Representatives and the Senate is required.

This mechanism is a key aspect of checks and balances because it enables the legislative branch to check the power of the executive branch, ensuring that both branches can influence the legislative process. The framers of the Constitution integrated this principle to maintain a balance of power among the branches of government, allowing them to hold each other accountable and prevent the dominance of any single branch.

Other concepts like majority rule, separation of powers, and judicial review each describe different aspects of governance, but they do not specifically address the action of overriding a presidential veto in the context of the relationship between Congress and the presidency.