The United States Constitution - a Truly Remarkable Document

Hillsdale College - Constitution 101:  Separation of Powers to Ensure Good Government

The separation of powers helps to ensure good government at the same time it guards against tyranny. Independent in function but coordinated in the pursuit of justice, the three branches of government—legislative, executive, and judicial—must each have enough power to resist the encroachment of the others, and yet not so much that the liberty of the people is lost.

A political regime has three dimensions: the ruling institutions, the rulers, and the way of life of the people. In America, the rulers—the people themselves—and their ruling institutions—staffed by the people’s representatives—aim at securing the Creator-endowed natural rights of all citizens. The Framers did this in two ways. “Vertically” considered, our ruling institutions are defined by federalism, or the division of power between the national, state, and local governments. “Horizontally” considered, the ruling institutions of the federal government itself are separated and co-equal.

In the American regime, the Constitution is the “supreme law of the land.” No one branch is superior to it; all three branches have a duty to abide by it. While each of the three branches plays a unique role in the passage, execution, and interpretation of laws, all of the branches must work together in the governing process.

The legislative branch is closest to the people. It is also the branch in which the danger of majority tyranny lurks. The passions of the people are reflected most in the House of Representatives, where the members are elected for terms of two years. The Senate, with its six year terms, was designed to be a more stable legislative presence than the House.

The defining characteristic of the executive is “energy.” The president can act swiftly and decisively to deal with foreign threats and to enforce the law, and can also provide a check on legislative tyranny through the veto.

Members of the judiciary, the third branch of government, must exercise judgment in particular cases to secure individual rights. Through “judicial review,” the judiciary is given the authority to strike down laws that are contrary to the Constitution. But judicial review is not judicial supremacy; even the Supreme Court must rely upon the other branches once it has rendered judgment.

The checks that each branch can exercise against the encroachment of the others ultimately protect the liberties of the people. The separation of powers promotes justice and good government by having each branch perform its proper function. This institutional design allows the sovereign people to observe and to know which branch is responsible for which actions in order to hold each to account. The sense of mutual responsibility built into the separation of powers is a reflection of the moral and civic responsibility all Americans share.