Answer:

Principles of American Government

By the late 1780s, it had become clear that the first governmental system of the United States, the Articles of Confederation, wasn’t working. The central government under the Articles lacked a strong executive and a method for resolving disputes at the national level.

But adding a strong executive branch to the US government might pose the opposite problem. Would an executive, wielding the power of the army, become too powerful? Would a federal government with more power overall soon become tyrannical?

At the Constitutional Convention, the Framers debated these issues. Their ultimate solution was to separate the powers of government among three branches—legislative, executive, and judicial—so that each branch had to cooperate with the others in order to accomplish policymaking goals. For example, although the executive branch commands the military, only the legislative branch can declare war and make funds available to pay and provision the army. Therefore, both the legislative branch (Congress) and the executive branch (the president) must consent for the United States to go to war.

Accordingly, each branch of government has unique powers. As the branch most responsive to the will of the people (who elect its members), Congress has the power to pass laws, declare war, ratify treaties, and levy taxes. The executive branch conducts foreign affairs and commands the armed forces. The judicial branch interprets the laws of Congress and the actions of the president to determine whether they are constitutional.