John Locke's ideas of freedom of religion, natural rights, and that the government comes from the consent of the people, are part of the Declaration of Independence and the U.S. Constitution. Rousseau's idea that people were happy if they were free led to popular sovereignty, meaning that the U.S. government was created and controlled by the people. He is also the reason we have a representative democracy. Voltaire valued freedom of religion and the right to fair trial, which are both in the U.S. Bill of Rights. Montesquieu is the reason we have the separation of powers and checks and balances in the U.S. government. Philosophers, such as these, have influenced American independence and our government.