Final answer:
The U.S. system is best described as a constitution-based federal republic or a representative democracy, where citizens elect representatives to govern on their behalf. It is characterized by a system of checks and balances and requires a supermajority for constitutional amendments to ensure broad support.
Step-by-step explanation:
Despite the recent changes to the U.S. Constitution that have enhanced its democratic character, the U.S. system is best described as representative democracy or a republic in nature. This means that while it champions the democratic ideology, it's not a pure democracy where all citizens vote on all proposed legislation.
Instead, the United States is a constitution-based federal republic where citizens elect representatives to make policy decisions on their behalf.
The government of the United States includes elements of monarchy (the presidency), aristocracy (the Senate, the Electoral College, and the Supreme Court), and democracy (the House of Representatives, elections).
The process for amending the U.S. Constitution requires a supermajority, reflecting the system's commitment to changes that have broad support across Congress and among the states.
This exhibits the U.S. approach to a limited government and the idea of popular sovereignty, wherein political power ultimately comes from the consent of the governed.