In the United States, politics functions within a framework of a constitutional federal republic and presidential system, with three distinct branches that share powers: the U.S. Congress which forms the legislative branch, a bicameral legislative body comprising the House of Representatives and the Senate; the ...

The foundations of American government lie squarely in the 17th and 18th century European Enlightenment. The American founders were well versed in the writings of the philosophes, whose ideas influenced the shaping of the new country.

The political scientist Richard Ellis identified egalitarianism, individualism, and hierarchy as defining cultures in American political culture.