The institutional arrangement of the US government uses is a system of separate branches sharing power.
The United States is more appropriately described as a constitutional federal republic, while frequently being called a democracy. The President of the US is the Commander-in-Chief of the armed forces and the head of state and government of the United States of America. According to Article II of the Constitution, the President is in charge of carrying out and upholding the laws passed by Congress. All the three branches of government can prevent the authority of the others through checks and balances. This makes sure that no branch can get too powerful in this way. To ensure that the balance of power is maintained among the branches, each branch "checks" the powers of the others.
Learn more about US government here:
https://brainly.com/question/2496524
#SPJ4