The Apportionment Clause of Section 2, Article I, of the United States Constitution, together with the amendment to that section made by Section 2 of the Fourteenth Amendment, requires seats in the U.S. House of Representatives to be apportioned among the states according to the "whole number of persons in each State" and to be elected "by the People of the several States." These provisions have been construed by the United States Supreme Court to require not only that congressional seats be divided among the states according to population, but also that congressional districts within a state be drawn according to population.