Popular sovereignty in the United States

Popular sovereignty is the principle that the leaders of a state and its government are created and sustained by the consent of its people, who are the source of all political legitimacy. Citizens may unite and offer to delegate a portion of their sovereign powers and duties to those who wish to serve as officers of the state, contingent on the officers agreeing to serve according to the will of the people.

Source: Wikipedia — Popular sovereignty in the United States (CC BY-SA 4.0)